Edgar Filing: U.S. SILICA HOLDINGS, INC.

Large accelerated filer

Accelerated filer

Non-accelerated filer

Smaller reporting company

10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

x	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Quarterly Period Ended September 30, 2013

¨	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number 001-35416

LOGO

U.S. Silica Holdings, Inc.

(Exact name of registrant as specified in its charter)

Delaware

26-3718801

(State or other jurisdiction of

Incorporation or Organization)

(I.R.S. Employer

Identification No.)

8490 Progress Drive, Suite 300

Frederick, Maryland 21701

(Address of Principal Executive Offices) (Zip Code)

(301) 682-0600

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No x

As of November 4, 2013, 53,400,850 shares of common stock, par value $0.01 per share, of the registrant were outstanding.

U.S. Silica Holdings, Inc.

FORM 10-Q

For the Quarter Ended September 30, 2013

TABLE OF CONTENTS


		Page
PART I	Financial Information (Unaudited):
Item 1.	Financial Statements
	Condensed Consolidated Balance Sheets		2
	Condensed Consolidated Statements of Operations		3
	Condensed Consolidated Statements of Comprehensive Income		4
	Condensed Consolidated Statements of Cash Flows		5
	Notes to Condensed Consolidated Financial Statements		6
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		24
Item 3.	Quantitative and Qualitative Disclosures About Market Risk		42
Item 4.	Controls and Procedures		43

PART II	Other Information:
Item 1.	Legal Proceedings		44
Item 1A.	Risk Factors		45
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds		45
Item 3.	Defaults Upon Senior Securities		45
Item 4.	Mine Safety Disclosures		45
Item 5.	Other Information		45
Item 6.	Exhibits		45
Signatures			S-1

PART I—FINANCIAL INFORMATION

ITEM 1.

FINANCIAL STATEMENTS

U.S. SILICA HOLDINGS, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(dollars in thousands)


	September 30, 2013			December 31, 2012
	(unaudited)
ASSETS
Current Assets:
Cash and cash equivalents	$	128,687		$	61,022
Short-term investments		24,986			—
Accounts receivable, net		74,661			59,564
Inventories, net		59,127			39,835
Prepaid expenses and other current assets		10,826			6,738
Deferred income tax, net		9,979			10,108
Income tax deposits		2,629			—

Total current assets		310,895			177,267

Property, plant and mine development, net		437,748			414,218
Debt issuance costs, net		5,475			2,111
Goodwill		68,403			68,403
Trade names		10,436			10,436
Customer relationships, net		6,223			6,531
Other assets		9,325			7,844

Total assets	$	848,505		$	686,810

LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities:
Book overdraft	$	3,651		$	5,390
Accounts payable		40,600			37,333
Dividends payable		6,681			—
Accrued liabilities		10,755			9,481
Accrued interest		45			2
Current portion of capital lease		266			—
Current portion of long-term debt		3,487			2,433
Income tax payable		—			20,596
Current portion of deferred revenue		—			4,855

Total current liabilities		65,485			80,090

Long-term debt		368,835			252,992
Liability for pension and other post-retirement benefits		50,672			52,747
Deferred income tax, net		63,433			59,111
Other long-term obligations		12,434			10,176

Total liabilities		560,859			455,116

Commitments and contingencies

Stockholders’ Equity:
Common stock		533			529
Preferred stock		—			—
Additional paid-in capital		172,024			163,579
Retained earnings		128,219			82,731
Treasury stock, at cost		—			(970	)
Accumulated other comprehensive loss		(13,130	)		(14,175	)

Total stockholders’ equity		287,646			231,694

Total liabilities and stockholders’ equity	$	848,505		$	686,810

The accompanying notes are an integral part of these financial statements.

U.S. SILICA HOLDINGS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(unaudited; dollars in thousands, except per share amounts)


	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Sales	$	144,372		$	115,885		$	396,511		$	323,075
Cost of goods sold (excluding depreciation, depletion and amortization)		90,983			69,706			245,692			185,547
Operating expenses
Selling, general and administrative		12,800			10,135			35,303			29,757
Depreciation, depletion and amortization		9,152			5,968			26,320			17,920

		21,952			16,103			61,623			47,677

Operating income		31,437			30,076			89,196			89,851
Other (expense) income
Interest expense		(4,144	)		(3,326	)		(11,255	)		(10,551	)
Early extinguishment of debt		(480	)		—			(480	)		—
Other income, net, including interest income		260			348			445			681

		(4,364	)		(2,978	)		(11,290	)		(9,870	)

Income before income taxes		27,073			27,098			77,906			79,981
Income tax expense		(5,739	)		(8,302	)		(19,103	)		(22,621	)

Net income	$	21,334		$	18,796		$	58,803		$	57,360

Earnings per share:
Basic	$	0.40		$	0.36		$	1.11		$	1.09
Diluted	$	0.40		$	0.36		$	1.10		$	1.09

The accompanying notes are an integral part of these financial statements.

U.S. SILICA HOLDINGS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(unaudited; dollars in thousands)


	Three Months Ended September 30,					Nine Months Ended September 30,
	2013			2012		2013			2012
Net income	$	21,334		$	18,796	$	58,803		$	57,360
Other comprehensive income:
Unrealized gain (loss) on derivatives (net of tax of $(71) and $83 for the three months ended September 30, 2013 and 2012, respectively, and $81 and $108 for the nine months ended September 30, 2013 and 2012, respectively)		(111	)		2		127			163
Unrealized gain (loss) on investments (net of tax of $(4) and $0 for the three and nine months ended September 30, 2013 and 2012, respectively)		(10	)		—		(10	)		—
Pension and other post-retirement benefits liability adjustment (net of tax of $157 and $88 for the three months ended September 30, 2013 and 2012, respectively, and $591 and $381 for the nine months ended September 30, 2013 and 2012, respectively)		246			137		928			598

		125			139		1,045			761

Comprehensive income	$	21,459		$	18,935	$	59,848		$	58,121

The accompanying notes are an integral part of these financial statements.

U.S. SILICA HOLDINGS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited; dollars in thousands)


	Nine Months Ended September 30,
	2013			2012
Operating activities:
Net income	$	58,803		$	57,360
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization		26,320			17,920
Debt issuance amortization		461			381
Original issue discount amortization		144			126
Early extinguishment of debt		480			—
Deferred income taxes		4,452			5,734
(Gain)/loss on disposal of property, plant and equipment		(2	)		(469	)
Deferred revenue		(4,855	)		(5,457	)
Equity-based compensation		2,236			1,662
Excess tax benefit from equity-based compensation		(823	)		—
Other		(319	)		437
Changes in assets and liabilities:
Accounts receivable		(15,097	)		(13,102	)
Inventories		(19,292	)		(6,921	)
Prepaid expenses and other current assets		(4,088	)		(38	)
Income taxes		(22,402	)		14,092
Accounts payable and accrued liabilities		4,541			10,559
Advisory services termination fee to holding company		—			(8,000	)
Accrued interest		43			153
Liability for pension and other post-retirement benefits		(2,075	)		(4,448	)

Net cash provided by operating activities		28,527			69,989

Investing activities:
Capital expenditures		(46,835	)		(74,868	)
Purchase of short-term investments		(25,000	)		—
Proceeds from sale of property, plant and equipment		167			1,255

Net cash used in investing activities		(71,668	)		(73,613	)

Financing activities:
Proceeds from issuance of common stock in initial public offering		—			50,000
Dividends paid		(6,634	)		—
Repurchase of common stock		—			(1,072	)
Issuance of treasury stock		—			22
Proceeds from options exercised		6,505			—
Excess tax benefit from equity-based compensation		823			—
Vesting of restricted stock		(145	)		—
Increase in long-term debt		373,791			—
Repayment of long-term debt		(257,016	)		(1,950	)
Change in book overdraft		(1,739	)		910
Prepayment penalties		(250	)		—
Principal payments on capital lease obligations		(478	)		—
Financing fees		(4,051	)		(1,304	)
Common stock issuance costs		—			(9,171	)

Net cash provided by financing activities		110,806			37,435

Net increase/(decrease) in cash and cash equivalents		67,665			33,811
Cash and cash equivalents, beginning of period		61,022			59,199

Cash and cash equivalents, end of period	$	128,687		$	93,010

Non-cash investing and financing activities:
Contribution of note payable and accrued interest by holding company	$	—		$	16,692
Capital lease obligations incurred to acquire assets		744			—

Supplemental cash flow information:
Cash paid during the period for:
Interest	$	10,774		$	9,339
Taxes	$	37,719		$	3,253

The accompanying notes are an integral part of these financial statements.

U.S. SILICA HOLDINGS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited; dollars in thousands, except share and per share amounts)

NOTE A—ORGANIZATION

U.S. Silica Holdings, Inc. (“Holdings,” and together with its subsidiaries “we,” “us” or the “Company”), formerly GGC USS Holdings, Inc., was organized as a holding company on November 14, 2008. On November 25, 2008, we acquired Hourglass Acquisitions I, LLC, whose only operating subsidiary was U.S. Silica Company (“U.S. Silica”).

On November 25, 2008, we issued 1,000 shares of our common stock to our then sole stockholder, GGC Holdings, for an aggregate purchase price of $10.00. The shares were issued in reliance on Section 4(2) of the Securities Act because the sale of the securities did not involve a public offering. Appropriate legends were affixed to the securities issued in this transaction. On July 8, 2011, our Board of Directors approved, and we subsequently filed, an Amended and Restated Certificate of Incorporation which, among other things, increased the authorized shares of common stock to 100 million shares. The Amended and Restated Certificate of Incorporation also created a 50,000-for-one split of our common stock. All of our common stock share and per share data contained in the financial statements has been retroactively adjusted to reflect this stock split for all periods presented.

On January 31, 2012, the Certificate of Incorporation was amended and restated to increase the authorized shares of common stock to 500 million shares, and to authorize 10 million shares of preferred stock.

On January 31, 2012, we completed an initial public offering of common stock (the “IPO”) through a Registration Statement on Form S-1 (File No. 333-175636), pursuant to which we registered and issued 2,941,176 shares of our common stock, and we registered and certain of our stockholders sold 8,823,529 shares of common stock at an offering price of $17.00 per share. On February 6, 2012, we issued all 2,941,176 shares of common stock for an aggregate offering price of approximately $50.0 million and the selling stockholders sold all 8,823,529 shares of common stock for an aggregate offering price of approximately $150.0 million. As a result of the offering, we received net proceeds of approximately $40.8 million, after deducting $3.5 million of underwriting discounts and commissions and offering expenses of $5.7 million.

On January 31, 2012, simultaneously with the initial public offering of our common stock, GGC USS Holdings, LLC (“GGC Holdings”), our sole stockholder prior to the IPO and now our largest stockholder, contributed to us all of the stock of its wholly-owned subsidiary, GGC RCS Holdings, Inc., and its operating subsidiary, Coated Sand Solutions, LLC. Prior to this transaction, GGC RCS Holdings, Inc. had a $15.0 million note payable to GGC Holdings which, together with accrued interest of $1.7 million, was converted to an equity contribution by GGC Holdings, simultaneously with the IPO. Coated Sand Solutions, LLC owns facilities to produce resin-coated sand.

NOTE B—SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The consolidated financial statements as of and for the three and nine months ended September 30, 2013 and 2012 (the “Financial Statements”), present our financial position, results of operations, and cash flows. In consideration of the contribution of GGC RCS Holdings, Inc. to us on January 31, 2012, we and our subsidiaries are presented on a consolidated basis with GGC RCS Holdings, Inc. as of and for the three and nine months ended September 30, 2013 and 2012 and as of the year ended December 31, 2012.

We have condensed or omitted certain information and footnote disclosures normally included in financial statements presented in accordance with U.S. generally accepted accounting principles (“GAAP”). Although we believe our disclosures are adequate to make the information presented not misleading, you should read the

Financial Statements in this report in conjunction with the combined financial statements and notes to those financial statements in our Annual Report on Form 10-K for the fiscal year ended December 31, 2012, as filed with the Securities and Exchange Commission (“SEC”) on February 26, 2013 (our “2012 Annual Report”). Certain terms not otherwise defined in this Quarterly Report on Form 10-Q have the meanings specified in our 2012 Annual Report.

In our opinion, our Financial Statements reflect all normal and recurring adjustments necessary to present fairly our financial position as of September 30, 2013, and December 31, 2012, the results of our operations for the three and nine months ended September 30, 2013 and 2012, and our cash flows for the nine months ended September 30, 2013 and 2012. Interim results may not be indicative of fiscal year performance because of seasonal and short-term variations. We have eliminated all material intercompany transactions and balances between entities consolidated in these Financial Statements.

We follow Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) guidance for identification and reporting of entities over which control is achieved through means other than voting rights. The guidance defines such entities as Variable Interest Entities (“VIEs”). As of September 30, 2013 and for the periods presented herein, we have identified no entities over which we maintain any level of control that would qualify for consolidation under ASC guidance.

In order to make this report easier to read, we refer throughout to (i) our Condensed Consolidated Balance Sheets as our “Balance Sheets,” (ii) our Condensed Consolidated Statements of Operations as our “Income Statements,” and (iii) our Condensed Consolidated Statements of Cash Flows as our “Cash Flows.”

Unaudited Interim Financial Statements

The accompanying Balance Sheet as of September 30, 2013, the Income Statements for the three and nine months ended September 30, 2013 and 2012; the Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2013 and 2012; the Consolidated Statements of Cash Flows for the nine months ended September 30, 2013 and 2012; and other information disclosed in the related notes are unaudited. The Balance Sheet as of December 31, 2012 was derived from our audited consolidated financial statements as included in our 2012 Annual Report. The accompanying Financial Statements should be read in conjunction with the audited combined financial statements and related notes contained in our 2012 Annual Report.

Use of Estimates

The preparation of the Financial Statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the related disclosure of contingent assets and liabilities at the date of the Financial Statements and the reported amounts of revenues and expenses during the reporting period. The more significant areas requiring the use of management estimates and assumptions relate to mineral reserves that are the basis for future cash flow estimates utilized in impairment calculations and units-of-production amortization calculations; environmental, reclamation and closure obligations; estimates of recoverable minerals; estimates of fair value for certain reporting units and asset impairments (including impairments of goodwill and other long-lived assets); write-downs of inventory to net realizable value; post-employment, post-retirement and other employee benefit liabilities; valuation allowances for deferred tax assets; reserves for contingencies and litigation; and the fair value and accounting treatment of financial instruments including derivative instruments. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. Accordingly, actual results may differ significantly from these estimates under different assumptions or conditions.

Recently Adopted Accounting Pronouncements

In May 2011, the FASB issued changes to conform existing guidance regarding fair value measurement and disclosure between GAAP and International Financial Reporting Standards. These changes both clarify the FASB’s intent about the application of existing fair value measurement and disclosure requirements and amend

certain principles or requirements for measuring fair value or for disclosing information about fair value measurements. The clarifying changes relate to the application of the highest and best use and valuation premise concepts, measuring the fair value of an instrument classified in a reporting entity’s stockholders’ equity, and disclosure of quantitative information about unobservable inputs used for Level 3 fair value measurements. The amendments relate to measuring the fair value of financial instruments that are managed within a portfolio; application of premiums and discounts in a fair value measurement; and additional disclosures concerning the valuation processes used and sensitivity of the fair value measurement to changes in unobservable inputs for those items categorized as Level 3, a reporting entity’s use of a nonfinancial asset in a way that differs from the asset’s highest and best use, and the categorization by level in the fair value hierarchy for items required to be measured at fair value for disclosure purposes only. We adopted this guidance, effective January 1, 2012, with no material impact on our Financial Statements.

In June 2011, the FASB issued changes to the presentation of comprehensive income. These changes give an entity the option to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements; the option to present components of other comprehensive income as part of the statement of changes in stockholders’ equity was eliminated. The items that must be reported in other comprehensive income or when an item of other comprehensive income must be reclassified to net income were not changed. Additionally, no changes were made to the calculation and presentation of earnings per share. We adopted this guidance, effective January 1, 2012, with no material impact on our Financial Statements.

In September 2011, the FASB issued changes to the testing of goodwill for impairment. These changes provide an entity the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not (more than 50%) that the fair value of a reporting unit is less than its carrying amount. Such qualitative factors may include the following: macroeconomic conditions; industry and market considerations; cost factors; overall financial performance; and other relevant entity-specific events. If an entity elects to perform a qualitative assessment and determines that an impairment is more likely than not, the entity is then required to perform the existing two-step quantitative impairment test, otherwise no further analysis is required. An entity also may elect not to perform the qualitative assessment and, instead, go directly to the two-step quantitative impairment test. We adopted this guidance, effective January 1, 2012 with no material impact on our Financial Statements.

In September 2011, the FASB issued changes to increase the level of disclosure about an employer’s participation in a multiemployer pension plan. These changes require that employers provide additional separate quantitative and qualitative disclosures for multiemployer pension plans and multiemployer other post-retirement benefit plans, including the significant multiemployer plan(s) in which an employer participates, the level at which an employer participates in the plan(s), the financial health of the plan(s) and the nature of the employer commitments to the plan(s). We adopted this guidance, effective January 1, 2012 with no material impact on our Financial Statements.

In July 2012, the FASB issued changes to the testing of indefinite-lived intangible assets for impairment. These changes provide an entity the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not (more than 50%) that the fair value of an indefinite-lived intangible asset is less than its carrying amount. In accordance with the amendment, an entity has the option first to assess qualitative factors to determine whether the existence of events and circumstances indicates that it is more likely than not that the indefinite-lived intangible asset is impaired. In conducting a qualitative assessment, an entity should consider the extent to which relevant events and circumstances, both individually and in the aggregate, could have affected the significant inputs used to determine the fair value of the indefinite-lived intangible asset since the last assessment. If, after assessing the totality of events and circumstances, an entity concludes that it is not more likely than not that the indefinite-lived intangible asset is impaired, then the entity is not required to take further action. However, if an entity concludes otherwise, then it is required to determine the fair value of the indefinite-lived intangible asset and

perform the quantitative impairment test by comparing the fair value with the carrying amount. An entity also has the option to bypass the qualitative assessment for any indefinite-lived intangible asset in any period and proceed directly to performing the quantitative impairment test. An entity will be able to resume performing the qualitative assessment in any subsequent period. We adopted this guidance, effective for the 2012 reporting period with no material impact on our Financial Statements.

In February 2013, the FASB issued ASU 2013-02, “Comprehensive Income (“ASC Topic 220”): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income,” which requires entities to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, entities are required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under U.S. GAAP to be reclassified to net income in its entirety in the same reporting period. For other amounts that are not required under U.S. GAAP to be reclassified in their entirety to net income, entities are required to cross-reference to other disclosures required under U.S. GAAP that provide additional detail on these amounts. We adopted this guidance, effective for the 2013 reporting period with no material impact on our Financial Statements.

In July 2013, the FASB amended Accounting Standards Codification (“ASC Topic 740”), “Income Taxes.” The amendment provides guidance on the financial statement presentation of an unrecognized tax benefit, as either a reduction of a deferred tax asset or as a liability, when a net operating loss carry-forward, a similar tax loss or a tax credit carry-forward exists. The amendment will be effective for interim and annual periods beginning after December 15, 2013 and may be applied on a retrospective basis. Early adoption is permitted. We do not expect the adoption of this amendment to have a significant effect on our consolidated financial position or results of operations.

NOTE C—EARNINGS PER SHARE

Basic income per common share is computed by dividing income available to common stockholders by the weighted average number of common shares outstanding for the period. Diluted income per common share is computed similarly to basic income per common share except that the weighted average number of common shares outstanding is increased to include the number of additional common shares that would have been outstanding if the potentially dilutive common shares had been issued. In accordance with the applicable accounting guidance for calculating earnings per share, we did not include in our calculation of diluted earnings per share for the applicable periods stock options where the exercise prices were greater than the average market prices. The weighted average outstanding stock options excluded were (in thousands) 193 and 169 for the three and nine months ended September 30, 2013, respectively, and 1,384 and 998 for the three and nine months ended September 30, 2012.


	Three Months Ended September 30,					Nine Months Ended September 30,
	2013			2012		2013			2012
Net income	$	21,334		$	18,796	$	58,803		$	57,360
Less: net income allocated to outstanding restricted stockholders		(74	)		—		(116	)		—

Net income allocated to common stockholders	$	21,260		$	18,796	$	58,687		$	57,360


Weighted-average common stock
Outstanding		53,103			52,873		52,963			52,585
Outstanding assuming dilution		53,429			52,887		53,263			52,628

NOTE D—CAPITAL STRUCTURE AND ACCUMULATED COMPREHENSIVE INCOME

Common Stock

Our Amended and Restated Certificate of Incorporation authorizes up to 500,000,000 shares of common stock, par value of $0.01. Subject to the rights of holders of any series of preferred stock, all of the voting power of the stockholders of Holdings shall be vested in the holders of the common stock. There were 53,384,264 shares of common stock issued and outstanding at September 30, 2013. As of September 30, 2012, there were 52,843,176 shares issued and outstanding. On July 29, 2013, our Board of Directors declared a quarterly cash dividend of $0.125 per share to common stockholders of record at the close of business on September 19, 2013, payable on October 3, 2013.

Management and our Board of Directors remain committed to evaluating additional ways of creating shareholder value. Any determination to pay dividends and other distributions in cash, stock, or property by Holdings in the future will be at the discretion of our Board of Directors and will be dependent on then-existing conditions, including our business conditions, our financial condition, results of operations, liquidity, capital requirements, contractual restrictions including restrictive covenants contained in our debt agreements, and other factors. Additionally, because we are a holding company, our ability to pay dividends on our common stock may be limited by restrictions on the ability of our subsidiaries to pay dividends or make distributions to us, including restrictions under the terms of the agreements governing our indebtedness.

Preferred Stock

Our Amended and Restated Certificate of Incorporation authorizes our Board of Directors to issue up to 10,000,000 shares, in the aggregate, of preferred stock, par value of $0.01 in one or more series and to fix the preferences, powers and relative, participating, optional or other special rights and qualifications, limitations or restrictions thereof, including the dividend rate, conversion rights, voting rights, redemption rights and liquidation preference and to fix the number of shares to be included in any such series without any further vote or action by our stockholders.

There are no shares of preferred stock issued or outstanding at September 30, 2013 and 2012. At present, we have no plans to issue any preferred stock.

Share Repurchase Program

On June 11, 2012, our Board of Directors authorized us to repurchase up to $25.0 million of our common stock. The authorization remains open for a period of 18 months, concluding on December 11, 2013. We are authorized to repurchase, from time to time, shares of our outstanding common stock on the open market or in privately negotiated transactions using available cash. The timing and amount of stock repurchases will depend on a variety of factors, including market conditions and corporate and regulatory considerations. The share repurchase program may be suspended, modified or discontinued at any time, and we have no obligation to repurchase any additional amount of our common stock under the program. We intend to make all repurchases in compliance with applicable regulatory guidelines and to administer the plan in accordance with applicable laws, including Rule 10b-18 of the Securities Exchange Act of 1934, as amended.

As part of the program, as of September 30, 2013, we have repurchased 100,000 shares of our common stock at an average price of $10.72 and are authorized to repurchase up to an additional $23.9 million of our common stock. As of September 30, 2013, all of the 100,000 shares repurchased to date have been re-issued to satisfy employee option exercises.

Stockholders’ Equity

The following table presents the activity included in stockholders’ equity during the nine months ended September 30, 2013.


	Common Stock		Treasury Stock			Additional Paid-In Capital		Retained Earnings (Deficit)			Accumulated Other Comprehensive Income (Loss)			Total Stockholders’ Equity
Balance at December 31, 2012	$	529	$	(970	)	$	163,579	$	82,731		$	(14,175	)	$	231,694
Net Income		—		—			—		58,803			—			58,803
Other comprehensive income, net of tax		—		—			—		—			1,045			1,045
Proceeds from options exercised		4		1,115			5,386		—			—			6,505
Shares withheld to pay taxes due upon vesting of restricted stock		—		(145	)		—		—			—			(145	)
Cash dividends declared ($0.250 per share of common stock)		—		—			—		(13,315	)		—			(13,315	)
Equity-based compensation		—		—			2,236		—			—			2,236
Excess tax benefit from equity-based compensation		—		—			823		—			—			823

Balance at September 30, 2013	$	533	$	—		$	172,024	$	128,219		$	(13,130	)	$	287,646

Accumulated Other Comprehensive Income

Accumulated other comprehensive income (loss) consists of fair value adjustments associated with cash flow hedges and accumulated adjustments for net experience losses and prior service cost related to employee benefit plans. The following table presents the changes in accumulated other comprehensive income by component during the nine months ended September 30, 2013:


	For the Nine Months Ended September 30, 2013
	Unrealized gain/(loss) on cash flow hedges			Unrealized gain/(loss) on short-term investments			Pension and other postretirement benefits liability			Total
Beginning Balance	$	(183	)	$	—		$	(13,992	)	$	(14,175	)
Other comprehensive income (loss) before reclassifications		(57	)		(10	)		—			(67	)
Amounts reclassed from accumulated other comprehensive income		184			—			928			1,112

Ending Balance	$	(56	)	$	(10	)	$	(13,064	)	$	(13,130	)

The following table presents the reclassifications out of accumulated other comprehensive income (loss) during the nine months ended September 30, 2013:


Details about accumulated other comprehensive income	Amount reclassified from accumulated other comprehensive income			Affected line item in the statement of operations
Gains and losses on cash flow hedges
Interest rate contracts	$	301		Interest expense
		(117	)	Tax expense

	$	184		Net of tax

Amortization of postretirement benefits liability
Actuarial gains/(losses)	$	1,450		⁽¹⁾
Prior service cost		69		⁽¹⁾

	$	1,519		Total before tax
		(591	)	Tax expense

		928		Net of tax

Total reclassifications for the period	$	1,112		Net of tax

⁽¹⁾	These accumulated other comprehensive income components are included in the computation of net periodic pension cost (see note R).

NOTE E—ACCOUNTS RECEIVABLE

At September 30, 2013 and December 31, 2012, accounts receivable consisted of the following:


	September 30, 2013			December 31, 2012
Trade receivables	$	75,588		$	56,519
Less: Allowance for doubtful accounts		(1,056	)		(1,053	)

Net trade receivables		74,532			55,466
Other receivables		129			4,098

Total accounts receivable	$	74,661		$	59,564

Our five largest customers accounted for approximately 32% and 29% of sales in the nine months ended September 30, 2013 and 2012, respectively. No single individual customer accounted for more than 10% of sales in the nine months ended September 30, 2013 and 2012.

NOTE F—INVENTORIES

At September 30, 2013 and December 31, 2012, inventories consisted of the following:


	September 30, 2013		December 31, 2012
Supplies	$	15,275	$	13,472
Raw materials and work in process		11,865		10,720
Finished goods		31,987		15,643

Total inventories	$	59,127	$	39,835

Inventories include spare parts and supplies for routine facilities maintenance, raw stockpiles and silica and other industrial sand available for shipment. We value inventory at the lower of cost or market. Cost is

determined using the first-in, first-out and average cost methods. Finished goods increased $16.4 million to $32.0 million as of September 30, 2013 compared to $15.6 million as of December 31, 2012, primarily due to an increase of inventory held at transloads.

NOTE G—PROPERTY, PLANT AND MINE DEVELOPMENT

At September 30, 2013 property, plant and mine development consisted of the following:


	As of September 30, 2013
	Cost		Accumulated Depreciation/ Amortization			Net Book Value
Mining property and mine development	$	163,537	$	(19,280	)	$	144,257
Asset retirement cost		6,799		(787	)		6,012
Land		25,738		—			25,738
Land improvements		29,550		(6,233	)		23,317
Buildings		35,332		(6,032	)		29,300
Machinery and equipment		245,234		(71,064	)		174,170
Furniture and fixtures		965		(231	)		734

		507,155		(103,627	)		403,528
Construction-in-progress		34,220		—			34,220

	$	541,375	$	(103,627	)	$	437,748

At December 31, 2012 property, plant and mine development consisted of the following:


	As of December 31, 2012
	Cost		Accumulated Depreciation/ Amortization			Net Book Value
Mining property and mine development	$	163,538	$	(15,778	)	$	147,760
Asset retirement cost		5,124		(597	)		4,527
Land		24,795		—			24,795
Land improvements		27,604		(4,034	)		23,570
Buildings		31,558		(4,354	)		27,204
Machinery and equipment		221,139		(53,599	)		167,540
Furniture and fixtures		915		(142	)		773

		474,673		(78,504	)		396,169
Construction-in-progress		18,049		—			18,049

	$	492,722	$	(78,504	)	$	414,218

Depreciation expense, including depletion and amortization, recognized during the three months ended September 30, 2013 and 2012 was $9.2 million and $6.0 million, respectively, and $26.3 million and $17.9 million for the nine months ended September 30, 2013 and 2012, respectively. The amount of interest costs capitalized in property, plant and equipment was $106 and $308 for the three months ended September 30, 2013 and 2012, respectively, and $365 and $541 for the nine months ended September 30, 2013 and 2012, respectively. As of September 30, 2013, we hold $266 of assets under a capital lease obligation.

NOTE H—ACCRUED LIABILITIES

At September 30, 2013 and December 31, 2012, accrued liabilities consisted of the following:


	September 30, 2013		December 31, 2012
Accrued salaries and wages	$	2,159	$	2,939
Accrued vacation liability		2,263		2,397
Current portion of liability for pension and post-retirement benefits		1,946		1,413
Accrued healthcare liability		1,453		1,278
Other accrued liabilities		2,934		1,454

Total accrued liabilities	$	10,755	$	9,481

We are self-insured for health care claims for eligible participating employees and qualified dependent medical claims, subject to deductibles and limitations. Our liabilities for claims incurred but not reported (“IBNR”) are determined based on an estimate of the ultimate aggregate liability for claims incurred. The estimate is calculated from actual historical claim rates and reviewed and adjusted periodically, as necessary.

Other accrued liabilities consist of taxes payable, accrued shipping costs, royalties payable, and other immaterial items.

NOTE I—DEBT

As discussed below, on July 23, 2013, we refinanced our existing senior secured debt by amending our Term Loan and replacing our existing Revolver. At September 30, 2013 and December 31, 2012, debt consisted of the following:


	September 30, 2013			December 31, 2012
Revolving line-of-credit:	$	—	⁽¹⁾	$	—	⁽²⁾
⁽¹⁾Revolver expiring July 23, 2018 (4.75% at September 30, 2013)
⁽²⁾Revolver expiring October 31, 2016 (5.0% at December 31, 2012); replaced by ⁽¹⁾on July 23, 2013
Senior secured credit facility:		372,322			255,425
Term loan facility—final maturity July 23, 2020 (4% at September 30, 2013 and 4.75% at December 31, 2012), net of unamortized original issue discount of $1,740 and $675, respectively

Total debt		372,322			255,425
Less: current portion		(3,487	)		(2,433	)

Total long-term portion of debt	$	368,835		$	252,992

Revolving Line-of-Credit

As of September 30, 2013, the available borrowing base under our revolving line-of-credit (the “Revolver”) was $50 million, with zero drawn as of that date and $9.3 million allocated for letters of credit, leaving $40.7 million available for general corporate use under this revolving credit agreement.

Debt Maturities

As of September 30, 2013, contractual maturities of our debt are as follows:


2013	$	872
2014		3,488
2015		3,490
2016		3,493
2017		3,495
2018		3,498
Thereafter		353,986

	$	372,322

On January 31, 2012, we amended our senior secured term loan facility (the “Term Loan”). The primary revisions to the Term Loan were to eliminate a requirement to provide monthly financial reports, to remove financial covenant restrictions related to capital expenditures, to provide flexibility to make investments and acquisitions and to incur indebtedness, and to provide a new subsidiary guarantee from Coated Sand Solutions, LLC.

On December 31, 2012, we amended our Revolver. The primary revisions to the Revolver included an increase of the commitment under the Revolver from $35 million to $50 million, and the letter of credit sublimit from $15 million to $20 million; provided, however, that the aggregate principal amount of the loans and letters of credit obligations outstanding at any one time shall not exceed the borrowing base as calculated pursuant to the agreement. The amendment also extended the termination date of the Revolver from October 31, 2015 to October 31, 2016, reduced prices and fees on borrowings, letters of credit and unused commitments and added an additional subsidiary, Coated Sand Solutions, LLC, as a co-borrower.

On July 23, 2013, we refinanced our existing senior secured debt by amending our Term Loan and replacing our existing Revolver. The Term Loan amendment refinanced our existing senior debt by entering into a new $425 million senior secured credit facility, consisting of a $375 million Term Loan and a $50 million new Revolver that may also be used for swingline loans (up to $5 million) or letters of credit (up to $20 million). The Term Loan amendment also, among other things, removed and amended certain financial and other covenants to provide additional operating flexibility, and lowered interest rates on borrowed amounts. The existing Revolver was terminated. The Term Loan will expire on July 23, 2020 and the new Revolver will expire on July 23, 2018. As a result of refinancing our Term Loan and replacing our Revolver, we expensed $1.6 million of costs consisting of $1.1 million related to third party fees in selling, general, and administrative expenses and $0.5 million related to early extinguishment of debt.

Our senior secured credit facility is secured by substantially all of our assets and a pledge of the equity interests in certain of our subsidiaries. The facility contains covenants that, among other things, govern our ability to create, incur or assume indebtedness and liens, to make acquisitions or investments, to pay dividends and to sell assets. The facility also requires us to maintain a consolidated leverage ratio of no more than 3.75:1.00 as of the last day of any fiscal quarter whenever usage of the Revolver (other than certain undrawn letters of credit) exceeds 25% of the Revolver commitment. As of September 30, 2013, we are in compliance with all covenants in accordance with our senior secured credit facility.

NOTE J—ASSET RETIREMENT OBLIGATIONS

Mine reclamation costs, or future remediation costs for inactive mines, are accrued based on management’s best estimate at the end of each period of the costs expected to be incurred at a site. Such cost estimates include, where applicable, ongoing care, maintenance and monitoring costs. Changes in estimates at inactive mines are reflected in earnings in the period an estimate is revised.

As of September 30, 2013 and December 31, 2012, we had recorded a liability of $8.7 million and $6.7 million in other long-term obligations related to our asset retirement obligation. Changes in the asset retirement obligation during the nine month period ended September 30, 2013 and the year ended December 31, 2012, respectively, are as follows:


	September 30, 2013		December 31, 2012⁽¹⁾
Beginning balance	$	6,659	$	9,504
Liabilities settled/payments		—		—
Accretion expense		343		658
Additions, revisions of prior estimates and other		1,675		(3,503	)

Ending balance	$	8,677	$	6,659

⁽¹⁾	Represents change in the asset retirement obligation during the 12-month period ended December 31, 2012.

NOTE K—FAIR VALUE ACCOUNTING

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.

Cash equivalents

Due to the short-term maturity, we believe that our cash equivalent instruments at September 30, 2013 and December 31, 2012 approximate their reported carrying values.

Short-Term Investments

In general, the fair value of our short-term investments is based on quoted prices for similar assets in active markets, or for identical assets or similar assets in markets in which there were fewer transactions. Money market mutual funds are based on calculated net asset value. Variable rate demand obligations underwritten and remarketed by a financial institution are priced at par value.

Long-Term Debt, including current maturities

We believe that the fair values of our long-term debt, including current maturities, approximate their carrying values and based on their effective interest rates compared to current market rates.

Derivative Instruments

The estimated fair value of our derivative assets (interest rate caps) are recorded at each reporting period and are based upon widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each derivative contract. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. We also incorporate credit valuation adjustments to appropriately reflect both our nonperformance risk as well as that of the respective counterparty in the fair value measurements.

counterparties. However, as of September 30, 2013, we have assessed that the impact of the credit valuation adjustments on the overall valuation of our derivative positions is not significant. As a result, we have determined that our derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy.

In accordance with the fair value hierarchy, the following table presents the fair value of those assets that we measure at fair value on a recurring basis:


	September 30, 2013						December 31, 2012
	Level 1		Level 2		Total		Level 1		Level 2		Total
Short-term investments	$	19,119	$	5,867	$	24,986	$	—	$	—	$	—
Interest rate derivatives		—		150		150		—		11		11

Net asset	$	19,119	$	6,017	$	25,136	$	—	$	11	$	11

NOTE L—SHORT-TERM INVESTMENTS

We have segregated funds into designated accounts with an investment broker who manages our short-term investment portfolio. Those funds are held on an available-for-sale basis and are therefore reported at fair value on the balance sheet.

The following table summarizes our available-for-sale short-term investments as of September 30, 2013:


	Aggregate Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Money market mutual funds	$	11,538	$	—	$	—		$	11,538
Fixed income securities:
Certificates of deposit		7,595		—		(14	)		7,581
Variable Rate Demand Obligations		5,867		—		—			5,867

Total available-for-sale investments	$	25,000	$	—	$	(14	)	$	24,986

NOTE M—DERIVATIVE INSTRUMENTS

We are exposed to certain risks arising from both our business operations and economic conditions. We principally manage our exposure to a wide variety of business and operation risks through management of our core business activities. Specifically, we enter into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and unknown cash amounts, the value of which are determined by current interest rates. Interest rate derivatives are utilized in the normal course of business to manage our interest cost and the risk associated with changing interest rates. We do not use derivative financial instruments for trading or speculative purposes. By their nature, all such instruments involve risk, including the possibility that a loss may occur from the failure of another party to perform according to the terms of a contract (credit risk) or the possibility that future changes in market price may make a financial instrument less valuable or more onerous (market risk). As is customary for these types of instruments, we do not require collateral or other security from other parties to these instruments. In management’s opinion, there is no significant risk of loss in the event of nonperformance of the counterparties to these financial instruments.

Cash Flow Hedges of Interest Rate Risk

Our objectives in using interest rate derivatives are to add stability to interest expense and to manage our exposure to interest rate movements. To accomplish this objective, we primarily use interest rate cap agreements as part of our interest rate risk management strategy. Interest rate caps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty if interest rates rise above the strike rate on the contract in exchange for an upfront premium.

In connection with the Term Loan, we entered into two interest rate cap agreements that effectively place an upper limit for one-month LIBOR at 4.0% on the interest rate charged for $130.0 million of our floating rate Term Loan. On March 31, 2012, one of the agreements with a notional amount of $100.0 million matured. Concurrently with the maturity, the notional amount of a second agreement with an original notional amount of $30.0 million automatically increased to $130.0 million per the terms of the contract. On June 30, 2013 the second agreement matured. No additional expense was reclassified from accumulated other comprehensive income or recognized directly in earnings as a result of the maturity or adjustment. We entered into two interest rate cap agreements on April 8, 2013 and September 6, 2013 with a notional amount of $128 million and $60 million, respectively, which effectively place an upper limit for three-month LIBOR at 4.0%.

We assess the effectiveness of our hedges in offsetting the variability in the cash flow of the hedged obligations on a quarterly basis. The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in equity as accumulated other comprehensive income and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the nine months ended September 30, 2013 and the year ended December 31, 2012, we had no ineffectiveness for such contracts.

The following table summarizes the fair value of our derivative instruments. See Note K on fair value accounting for additional disclosures regarding the estimated fair values of our derivative instruments at September 30, 2013 and December 31, 2012.


			September 30, 2013						December 31, 2012
	Maturity Date		Contract/Notional Amount		Carrying Amount		Fair Value		Contract/Notional Amount		Carrying Amount		Fair Value
Interest rate cap agreement⁽¹⁾		2013	$	—	$	—	$	—	$	130 million	$	—	$	—
		2016	$	188 million	$	150	$	150	$	—	$	—	$	—

⁽¹⁾	Agreements limit the LIBOR floating interest rate base to 4%.

We have designated these contracts as qualified cash flow hedges. Accordingly, the effective portion of the gain or loss on the derivative instrument is reported as a component of other comprehensive income and recognized in earnings in the same period or periods during which the hedged transaction affects earnings.

The following table summarizes the effect of our derivatives instruments on our income statements and our condensed consolidated statements of comprehensive income for the three and nine months ended September 30, 2013 and 2012.


	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Deferred gain (loss) from derivatives in OCI, beginning of period	$	55		$	(248	)	$	(183	)	$	(409	)
Gain (loss) recognized in OCI from derivative instruments		(112	)		—			(57	)		(11	)
Gain (loss) reclassified from Accumulated OCI into income		1			2			184			174

Deferred gain (loss) from derivatives in OCI, end of period	$	(56	)	$	(246	)	$	(56	)	$	(246	)

NOTE N—EQUITY-BASED COMPENSATION

We recognize the cost of employee services rendered in exchange for awards of equity instruments, such as stock options and restricted stock, based on the fair value of those awards at the date of the grant. Compensation expense for equity units is recognized, on a straight-line basis, net of forfeitures, over the requisite service period for the fair value of the awards that actually vest.

As of September 30, 2013, we maintain two equity incentive plans (i) the GGC USS Holdings, LLC Management Equity Program (the “Equity Program”), and (ii) the U.S. Silica Holdings, Inc. 2011 Incentive Compensation Plan (the “2011 Plan”). The Equity Program granted Class C and Class D member units in GGC Holdings to three members of executive management; one of whom continues to be employed by us at September 30, 2013. The 2011 Plan provides for grants of stock options, stock appreciation rights, restricted stock and other incentive-based awards.

For awards granted under the Equity Program, we recognized $27 and $55 of compensation expense during the three months ended September 30, 2013 and 2012, respectively, and $82 and $164 during the nine months ended September 30, 2013 and 2012, respectively. As of September 30, 2013, there was $119 of total unrecognized compensation expense related to equity incentive shares, which is expected to be recognized over a weighted-average period of approximately 1.08 years.

For awards granted under the 2011 Plan, we recognized $827 and $459 of compensation expense during the three months ended September 30, 2013 and 2012, respectively and $2,154 and $1,498 during the nine months ended September 30, 2013 and 2012, respectively. As of September 30, 2013, there was $7.0 million of total unrecognized compensation expense related to equity incentive awards, which is expected to be recognized over a weighted-average period of approximately 2.63 years.

NOTE O—LEASES

We are obligated under certain operating leases and rental agreements for railroad cars, office space, mining property, mining/processing equipment and transportation and other equipment. Future minimum annual commitments under such operating leases at September 30, 2013 are as follows:


2013		14,752
2014		15,772
2015		14,062
2016		11,844
2017		9,678
Thereafter		23,092

Total future lease commitments	$	89,200

Expense related to operating leases and rental agreements was $4.5 million and $3.2 million for the three months ended September 30, 2013 and 2012, respectively, and $10.9 million and $8.7 million for the nine months ended September 30, 2013 and 2012, respectively.

As of September 30, 2013, we have a capital lease obligation of $266 which is expected to be repaid in 2013. We had no obligation under a capital lease as of September 30, 2012.

NOTE P—COMMITMENTS AND CONTINGENCIES

Our operating subsidiary, U.S. Silica Company (“U.S. Silica”), has been named as a defendant in various product liability claims alleging silica exposure causing silicosis. During the nine months ended September 30, 2013, three new claims were brought against U.S. Silica. As of September 30, 2013, there were 93 active silica-related products liability claims pending in which U.S. Silica is a defendant. Although the outcomes of these claims cannot be predicted with certainty, in the opinion of management, the ultimate resolution of these matters will not have a material adverse effect on our financial position or results of operations.

For periods prior to 1986, U.S. Silica had numerous insurance policies and an indemnity from a former owner that covered silicosis claims. In the fourth quarter of 2012, U.S. Silica settled all rights under the indemnity and its underlying insurance policies receiving $5.1 million from the parties involved. As a result of

the settlement, the indemnity and related policies are no longer available to U.S. Silica and U.S. Silica will not seek reimbursement for any defense costs or claim payments. Other insurance policies, however, continue to remain available to U.S. Silica.

We have recorded estimated liabilities for these claims in other long-term obligations as well as estimated recoveries under the indemnity agreement and an estimate of future recoveries under insurance in other assets on our consolidated balance sheets. As of September 30, 2013 and December 31, 2012, other noncurrent assets included $247 for insurance for third-party products liability claims and other long-term obligations included $1.2 million and $1.3 million, respectively, in third-party products claim liability.

NOTE Q—INCOME TAXES

We evaluate our deferred tax assets periodically to determine if valuation allowances are required. Ultimately, the realization of deferred tax assets is dependent upon generation of future taxable income during those periods in which temporary differences become deductible and/or credits can be utilized. To this end, management considers the level of historical taxable income, the scheduled reversal of deferred tax liabilities, tax-planning strategies and projected future taxable income. Based on these considerations, and the carry-forward availability of a portion of the deferred tax assets, management believes it is more likely than not that we will realize the benefit of the deferred tax assets.

At the end of each reporting period as presented, there were no material amounts of interest and penalties recognized in the statement of operations or balance sheets. We have no material unrecognized tax benefits or any known material tax contingencies at September 30, 2013 and December 31, 2012. Tax returns filed with the IRS for the years 2010 through 2012 along with tax returns filed with numerous state entities remain subject to examination.

In accordance with generally accepted accounting principles, it is our practice at the end of each interim reporting period to make our best estimate of the effective tax rate expected to be applicable for the full fiscal year. Estimates are revised as additional information becomes available.

The largest permanent item in computing both our effective tax rate and taxable income is the deduction allowed for statutory depletion. The deduction for statutory depletion does not necessarily change proportionately to changes in income before income taxes.

We are evaluating the potential impact of the final regulations released on September 13, 2013 concerning amounts paid to acquire, produce or improve tangible property and recovery of basis upon disposition. Because the revenue procedures governing the tangible property regulations will not be issued until the fourth quarter or later, we are still determining whether or not any changes in accounting method will be required and if they will result in a material impact to our financial statements. At this time, we do not anticipate there being a material impact.

NOTE R—PENSION AND POST-RETIREMENT BENEFITS

We maintain a noncontributory defined benefit pension plan covering certain employees. Net periodic pension benefit cost recognized for the three and nine months ended September 30, 2013 and 2012 are as follows:


	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Service cost	$	(320	)	$	(280	)	$	(960	)	$	(839	)
Interest cost		(1,049	)		(1,183	)		(3,148	)		(3,550	)
Expected return on plan assets		1,265			1,345			3,796			4,036
Amortization of prior service cost		(21	)		(6	)		(63	)		(20	)
Amortization of net (gain) loss		(455	)		(270	)		(1,366	)		(809	)

Net periodic benefit cost	$	(580	)	$	(394	)	$	(1,741	)	$	(1,182	)

In addition, we provide defined benefit post-retirement healthcare and life insurance benefits to some employees. Net periodic post-retirement benefit cost recognized for the three and nine months ended September 30, 2013 and 2012 are as follows:


	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Service cost	$	(24	)	$	(33	)	$	(139	)	$	(149	)
Interest cost		(116	)		(192	)		(622	)		(785	)
Expected return on plan assets		1			1			3			3
Amortization of net (gain) loss		(11	)		(29	)		(159	)		(219	)

Net periodic benefit cost	$	(150	)	$	(253	)	$	(917	)	$	(1,150	)

We contributed $1.5 and $1.7 million to the qualified pension plan during the three months ended September 30, 2013 and 2012, respectively, and $2.3 and $4.8 during the nine months ended September 30, 2013 and 2012, respectively. Total expected employer funding contributions during the fiscal year ending December 31, 2013 are $2.3 million for the pension plan, and $1.2 million for the post-retirement medical and life plan.

NOTE S—OBLIGATIONS UNDER GUARANTEES

We have indemnified St. Paul Travelers (“Travelers”) against any loss Travelers may incur in the event that holders of surety bonds, issued on our behalf by Travelers, execute the bonds. As of September 30, 2013, Travelers had $7.4 million in bonds outstanding for us. The majority of these bonds ($7.2 million) relate to reclamation requirements issued by various governmental authorities. Reclamation bonds remain outstanding until the mining area is reclaimed and the authority issues a formal release. The remaining bonds relate to such indefinite purposes as licenses, permits, and tax collection.

We have indemnified Safeco Insurance Company of America (“Safeco”) against any loss Safeco may incur in the event that holders of surety bonds, issued on our behalf by Safeco, execute the bonds. As of September 30, 2013, Safeco had $513 in bonds outstanding for us. These are all reclamation bonds.

U.S. Silica is the contingent guarantor of Kanawha Rail Corporation’s (“KRC”) obligations as lessee of 199 covered hopper railroad cars, which are used by U.S. Silica to ship sand to its customers. KRC’s obligation as lessee includes paying monthly rent of $66 until June 30, 2015, maintaining the cars, paying for any cars damaged or destroyed, and indemnifying all other parties to the lease transaction against liabilities including any loss of certain tax benefits. By separate agreement between U.S. Silica and KRC, KRC may, upon the occurrence of certain events, assign the lease obligations to U.S. Silica, but none of these events have occurred.

NOTE T—RELATED PARTY TRANSACTIONS

Advisory Agreement

In connection with our acquisition by an affiliate of Golden Gate Capital (the “Golden Gate Capital Acquisition”), we entered into an Advisory Agreement with Golden Gate Capital (the “Advisory Agreement”) whereby Golden Gate Capital agreed to provide business and organizational strategy and financial and advisory services. Such services included support and assistance to management with respect to negotiating and analyzing acquisitions and divestitures, negotiating and analyzing financing alternatives, preparing financial projections, monitoring compliance with financing agreements, marketing functions and searching for and hiring management personnel.

As compensation for these services, we agreed to pay Golden Gate Capital (1) an annual advisory fee in the aggregate amount equal to $1.3 million, payable quarterly in arrears, and (2) a transaction fee of 1.25% of the

aggregate value of each transaction resulting in a change in control of GGC Holdings or its subsidiaries, along with each acquisition, divestiture, recapitalization and financing. In addition to the fees described above, we also reimbursed Golden Gate Capital for all out-of-pocket costs incurred by Golden Gate Capital in connection with its activities under the Advisory Agreement, and indemnified Golden Gate Capital from and against all losses, claims, damages and liabilities related to the performance of its duties under the Advisory Agreement.

On February 6, 2012, we paid $8.0 million to Golden Gate Capital to terminate the advisory agreement previously entered into in connection with the Golden Gate Capital Acquisition. The $8.0 million termination fee was accrued for at December 31, 2011 and no additional expense was recognized during the year ended December 31, 2012 or as of the three and nine months ended September 30, 2013.

Promissory Note

On December 22, 2010, GGC RCS Holdings, Inc., entered into a $15.0 million promissory note with GGC Holdings, our sole stockholder prior to the IPO and now largest stockholder. The note provided working capital for a new subsidiary and was scheduled to mature on December 22, 2015. The note bore interest at 10%. Outstanding principal and interest under the note was payable upon demand, but no later than the maturity date. Upon sole election by the parent, any unpaid interest could be paid in cash on December 22 of each year until the maturity date. Interest on the note was recorded in interest expense in the Income Statements and any unpaid interest was included in accrued interest on the Balance Sheets. On January 31, 2012, simultaneously with the IPO, GGC Holdings contributed to us all of the stock of GGC RCS Holdings, Inc. and converted the $15.0 million promissory note, including $1.7 million of accrued interest, to equity.

NOTE U—SEGMENT REPORTING

Our business is organized into two reportable segments, Oil & Gas Proppants and Industrial & Specialty Products, based on end markets. The reportable segments are consistent with how management views the markets that we serve and the financial information reviewed by the chief operating decision maker. We manage our Oil & Gas Proppants and Industrial & Specialty Products businesses as components of an enterprise for which separate information is available and is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and assess performance.

An operating segment’s performance is primarily evaluated based on segment contribution margin, which excludes certain corporate costs not associated with the operations of the segment. These corporate costs are separately stated below and include costs that are related to functional areas such as operations management, corporate purchasing, accounting, treasury, information technology, legal and human resources. We believe that segment contribution margin, as defined above, is an appropriate measure for evaluating the operating performance of our segments. However, this measure should be considered in addition to, not a substitute for, or superior to, income from operations or other measures of financial performance prepared in accordance with generally accepted accounting principles. The other accounting policies of each of the two reporting segments are the same as those in the summary of significant accounting policies included in Note B.

In the Oil & Gas Proppants segment, we serve the oil and gas recovery market providing fracturing sand, or “frac sand,” which is pumped down oil and natural gas wells to prop open rock fissures and increase the flow rate of natural gas and oil from the wells.

The Industrial & Specialty Products segment consists of over 250 products and materials used in a variety of industries including, container glass, fiberglass, specialty glass, flat glass, building products, fillers and extenders, foundry products, chemicals, recreation products and filtration products.

The following table presents sales and segment contribution margin for the reporting segments and other operating results not allocated to the reported segments for the three and nine months ended September 30, 2013 and 2012:


	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Sales:
Oil & Gas Proppants	$	94,174		$	64,538		$	245,428		$	172,845
Industrial & Specialty Products		50,198			51,347			151,083			150,230

Total sales		144,372			115,885			396,511			323,075
Segment contribution margin:
Oil & Gas Proppants		40,129			34,236			111,766			102,563
Industrial & Specialty Products		14,546			14,184			43,150			40,568

Total segment contribution margin		54,675			48,420			154,916			143,131
Operating activities excluded from segment cost of goods sold		(1,286	)		(2,241	)		(4,097	)		(5,603	)
Selling, general and administrative		(12,800	)		(10,135	)		(35,303	)		(29,757	)
Depreciation, depletion and amortization		(9,152	)		(5,968	)		(26,320	)		(17,920	)
Interest expense		(4,144	)		(3,326	)		(11,255	)		(10,551	)
Early extinguishment of debt		(480	)		—			(480	)		—
Other income, net, including interest income		260			348			445			681

Income before income taxes	$	27,073		$	27,098		$	77,906		$	79,981

Asset information, including capital expenditures and depreciation, depletion, and amortization, by segment is not included in reports used by management in its monitoring of performance and, therefore, is not reported by segment. As of September 30, 2013 and December 31, 2012, goodwill of $68.4 million has been allocated to these segments with $47.7 million assigned to Oil & Gas Proppants and $20.7 million to Industrial and Specialty Products.

NOTE V—SUBSEQUENT EVENTS

On October 3, 2013 we paid a cash dividend of $0.125 per share to common stockholders of record on September 19, 2013, as had been declared by our Board of Directors on July 29, 2013.

On October 24, 2013, our Board of Directors declared a quarterly cash dividend of $0.125 per share to common stockholders of record at the close of business on December 16, 2013, payable on January 3, 2014.

On November 4, 2013, our Board of Directors extended our $25.0 million stock repurchase program through December 11, 2014. This program had been scheduled to expire on December 11, 2013.

ITEM 2.

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis of our financial condition and results of operations should be read together with the Condensed Consolidated Financial Statements in Part I, Item 1 of this Quarterly Report on Form 10-Q and the related notes included elsewhere in this report.

Management’s discussion and analysis of financial condition and results of operations (“MD&A”), is organized into the following sections:

•

Overview—A general description of our business, our strategic initiatives and the commercial silica industry.

•

Results of Operations—An analysis of our consolidated results of operations for the interim periods presented in our Condensed Consolidated Financial Statements in Part I, Item 1 of this Quarterly Report on Form 10-Q.

•

Liquidity and Capital Resources—An analysis of our cash flows, sources and uses of cash, contractual obligations and other items that may impact our financial position.

•

Critical Accounting Estimates—A discussion of accounting policies that require critical judgments and estimates.

•

Recent Accounting Pronouncements—A summary of accounting pronouncements which have been issued by relevant accounting standards.

In addition to disclosing financial results that are determined in accordance with United States generally accepted accounting principles, or GAAP, we also use certain non-GAAP financial information, such as:

•

Segment contribution margin, and

•

Net income (loss) adjusted to remove interest, taxes, depreciation, amortization, impairment, and other special items in order to arrive at Adjusted EBITDA as defined in our term loan facility.

Segment contribution margin and Adjusted EBITDA are not recognized measures under GAAP and should not be considered alternatives to or superior to expense and profitability measures derived in accordance with GAAP. For a detailed description of the non-GAAP measures used in this MD&A, please see the discussion under “How We Evaluate Our Business” and “Non-GAAP Financial Performance Measures”.

Forward-Looking Statements

This Quarterly Report on Form 10-Q contains forward-looking statements that are subject to risks and uncertainties. All statements other than statements of historical fact included in this Quarterly Report on Form 10-Q are forward-looking statements. Forward-looking statements give our current expectations and projections relating to our financial condition, results of operations, plans, objectives, future performance and business. You can identify forward-looking statements by the fact that they do not relate strictly to historical or current facts. These statements may include words such as “anticipate,” “estimate,” “expect,” “project,” “plan,” “intend,” “believe,” “may,” “will,” “should,” “can have,” “likely” and other words and terms of similar meaning in connection with any discussion of the timing or nature of future operating or financial performance or other events. For example, all statements we make relating to our estimated and projected costs, expenditures, cash flows, growth rates and financial results, our plans and objectives for future operations, growth or initiatives, strategies or the expected outcome or impact of pending or threatened litigation are forward-looking statements. All forward-looking statements are subject to risks and uncertainties that may cause actual results to differ materially from those that we expected, including:

•

fluctuations in demand for commercial silica;

•

the cyclical nature of our customers’ businesses;

•

operating risks that are beyond our control, such as changes in the price and availability of transportation, natural gas or electricity; unusual or unexpected geological formations or pressures; cave-ins, pit wall failures or rock falls; or unanticipated ground, grade or water conditions;

•

our dependence on two of our plants for a significant portion of our sales;

•

the level of activity in the natural gas and oil industries;

•

decreased demand for frac sand or the development of either effective alternative proppants or new processes to replace hydraulic fracturing;

•

federal, state and local legislative and regulatory initiatives relating to hydraulic fracturing and the potential for related regulatory action or litigation affecting our customers’ operations;

•

our rights and ability to mine our properties and our renewal or receipt of the required permits and approvals from governmental authorities and other third parties;

•

our ability to implement our capacity expansion plans within our current timetable and budget and our ability to secure off-take agreements for our increased production capacity, and the actual operating costs once we have completed the capacity expansion;

•

our ability to succeed in competitive markets;

•

loss of, or reduction in, business from our largest customers;

•

increasing costs or a lack of dependability or availability of transportation services or infrastructure;

•

increases in the prices of, or interruptions in the supply of, natural gas and electricity, or any other energy sources;

•

increases in the price of diesel fuel;

•

diminished access to water;

•

our ability to effectively integrate the manufacture of resin-coated sand with our existing processes;

•

our ability to successfully complete acquisitions or integrate acquired businesses;

•

our ability to make capital expenditures to maintain, develop and increase our asset base and our ability to obtain needed capital or financing on satisfactory terms;

•

substantial indebtedness and pension obligations;

•

restrictions imposed by our indebtedness on our current and future operations;

•

the accuracy of our estimates of mineral reserves and resource deposits;

•

a shortage of skilled labor and rising costs in the mining industry;

•

our ability to attract and retain key personnel;

•

our ability to maintain satisfactory labor relations;

•

our reliance on trade secrets and contractual restrictions, rather than patents, to protect our proprietary rights;

•

our significant unfunded pension obligations and post-retirement health care liabilities;

•

our ability to maintain effective quality control systems at our mining, processing and production facilities;

•

seasonal and severe weather conditions;

•

fluctuations in our sales and results of operations due to seasonality and other factors;

•

interruptions or failures in our information technology systems;

•

the impact of a terrorist attack or armed conflict;

•

our failure to maintain adequate internal controls;

•

extensive and evolving environmental, mining, health and safety, licensing, reclamation and other regulation (and changes in their enforcement or interpretation);

•

silica-related health issues and corresponding litigation;

•

our ability to acquire, maintain or renew financial assurances related to the reclamation and restoration of mining property; and

•

other factors included and disclosed in Part I, Item 1A, “Risk Factors” of our 2012 Annual Report.

We derive many of our forward-looking statements from our operating budgets and forecasts, which are based on many detailed assumptions. While we believe that our assumptions are reasonable, we caution that it is very difficult to predict the impact of known factors, and it is impossible for us to anticipate all factors that could affect our actual results. Important factors that could cause actual results to differ materially from our expectations, or cautionary statements, are disclosed under Item 1A, “Risk Factors” and Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our 2012 Annual Report. All written and oral forward-looking statements attributable to us, or persons acting on our behalf, are expressly qualified in their entirety by these cautionary statements as well as other cautionary statements that are made from time to time in our other filings with the SEC, including this Quarterly Report on Form 10-Q, and public communications. You should evaluate all forward-looking statements made in this Quarterly Report on Form 10-Q in the context of these risks and uncertainties.

We caution you that the important factors referenced above may not contain all of the factors that are important to you. In addition, we cannot assure you that we will realize the results or developments we expect or anticipate or, even if substantially realized, that they will result in the consequences or affect us or our operations in the way we expect. The forward-looking statements included in this Quarterly Report on Form 10-Q are made only as of the date hereof. We undertake no obligation to update or revise any forward-looking statement as a result of new information, future events or otherwise, except as otherwise required by law.

Overview

As of September 30, 2013, we are one of the largest domestic producers of commercial silica, a specialized mineral that is a critical input into a variety of attractive end markets. During our 113-year history, we have developed core competencies in mining, processing, logistics and materials science that enable us to produce and cost-effectively deliver over 250 products to customers across these markets. In our largest end market, Oil & Gas Proppants, our frac sand is used to stimulate and maintain the flow of hydrocarbons in oil and natural gas wells. This segment of our business is experiencing rapid growth due to recent technological advances in the hydraulic fracturing process, which have made the extraction of large volumes of oil and natural gas from U.S. shale formations economically feasible. Our silica is also used as an economically irreplaceable raw material in a wide range of industrial applications, including glassmaking and chemical manufacturing. Additionally, in recent years a number of attractive new end markets have developed for our high-margin, performance silica products, including high-performance glass, specialty coatings, polymer additives and geothermal energy systems.

We operate 15 facilities across the United States and control 300 million tons of reserves. We own one of the largest frac sand processing plants in the United States and control approximately 140 million tons of reserves that can be processed to meet American Petroleum Institute (API) frac sand size specifications. Our operations are organized into two segments based on end markets served: (1) Oil & Gas Proppants and (2) Industrial & Specialty Products. Our segments are complementary because our ability to sell to a wide range of customers across end markets allows us to maximize recovery rates in our mining operations, optimize our asset utilization and reduce the cyclicality of our earnings.

Recent Trends and Outlook

U. S. demand for industrial silica has been growing steadily. According to The Freedonia Group, Inc. (“Freedonia”), demand for industrial silica sand grew at a 4% compound annual growth rate (“CAGR”) from 2001 to 2011. This increase in demand was driven primarily by hydraulic fracturing, which grew at a 27% CAGR from 2001 to 2011, according to the most recent related Freedonia report dated October 2012. More recently, the recovery of the U.S. housing and automotive markets has also positively affected silica related to those markets such as glass, building materials, foundry and fillers and extenders. Trends driving the acceleration in demand include:

•

Increased demand in the oil and gas proppants end market. The increased demand for frac sand has been driven by the growth in the use of hydraulic fracturing as a means to extract hydrocarbons from shale formations. According to a Freedonia report dated August 2013, domestic proppant producers are expected to experience annual increases in demand of 11% through 2017. We expect continued growth of horizontal drilling. The industry may experience temporary fluctuations in demand and price as the market adjusts to changing supply and demand due to energy pricing fluctuations. We significantly expanded our sales efforts to the frac sand market in 2008 and have since experienced rapid growth in our sales associated with our oil and gas activities.

•

Rebound of demand in industrial end markets and continued growth in specialty end markets. The economic downturn resulting from the financial crisis negatively impacted demand for our products in industrial and specialty products end markets, most notably in the glassmaking, building products, foundry and chemicals end markets. This drop coincided with a similar drop in key economic demand drivers, including housing starts, light vehicle sales, repair and remodel activity and industrial production. To the extent these demand drivers recover to historical levels, which is difficult to predict given current economic uncertainty, we expect to see a corresponding increase in the demand for commercial silica. In addition, to the extent commercial silica products continue to be used in key alternative energy markets, we anticipate continued volume growth in specialty end markets, such as high performance glass and geothermal energy systems as well as the increased use of commercial silica in new applications such as specialty coatings and polymer additives.

Our Strategy

The key drivers of our growth strategy include:

•

Expand our oil and gas proppant production capacity and product portfolio. Beginning in the fourth quarter of 2011, we executed several initiatives to increase our frac sand production capacity and augment our proppant product portfolio. At our Ottawa, Illinois facility, we implemented operating improvements and installed a new dryer and six mineral separators to increase our annual frac sand production capacity by 900,000 tons. At our Rockwood, Michigan facility, we added 250,000 tons of annual frac sand production capacity by installing an entirely new processing circuit. In the first quarter of 2013, our new resin-coated sand facility became fully operational, with capacity to resin coat up to 400 million pounds of sand annually. In 2013, our Sparta, Wisconsin facility became fully operational with an annual raw sand production capacity of 1,700,000 tons. Also in 2013 we made an initial investment in a new Greenfield site near Utica, Illinois. When fully operational, we expect this facility to have an annual capacity of approximately 1,500,000 tons of raw frac sand. We expect the mine and plant to become fully operational during the first half of 2014.

•

Increase our presence in industrial and specialty products end markets. We intend to increase our presence and market share in certain industrial and specialty products end markets that we believe are poised for growth. We will continue to work toward transforming our industrial and specialty product segment from a commodity business to a more value-driven approach by developing capabilities and products that assist in enabling us to increase our presence in larger, more profitable markets.

•

Optimize product mix and further develop value-added capabilities to maximize margins. We continue to actively manage our product mix at each of our plants to ensure we maximize our profit margins.

This requires us to use our proprietary expertise in balancing key variables, such as mine geology, processing capacities, transportation availability, customer requirements and pricing. In 2012, while our tons sold increased by 14%, we believe this expertise helped enable us to increase our operating income by 96%. We also expect to continue investing in ways to increase the value we provide to our customers by expanding our product offerings, increasing our transportation assets, improving our supply chain management, upgrading our information technology, and creating a world class customer service model.

•

Expand our supply chain network and leverage our logistics capabilities to meet our customers’ needs in each strategic oil and gas basin. We continue to expand our transload network to ensure product is available to meet the growing in-basin needs of our customers. This approach allows us to provide strong customer service and puts us in a position to take advantage of opportunistic spot market sales. Our plant sites are strategically located to provide access to all Class I railroads, which enables us to cost effectively send product to each of the strategic basins in North America. We can ship product by truck, barge and rail with an ability to connect to short-line railroads as necessary to meet our customers’ evolving in-basin product needs. For example, in 2013, we opened our San Antonio, Texas unit-train receiving transload facility, which was built in partnership with BNSF railroad to support the Eagle Ford market. We believe that our supply chain network and logistics capabilities are a competitive advantage that enables us to provide superior service for our customers. We will continue to make strategic investments and develop partnerships with transload operators and transportation providers that will enhance our portfolio of supply chain services that we can provide to customers. In 2013, we signed a multi-year agreement with Wildcat Minerals LLC (“Wildcat”) which provides us with potential sand storage and rail capacity at 17 of Wildcat’s sand storage facilities, located near several major unconventional oil and gas shale basins. With the addition of these new sites, we now have in basin storage capacity at 31 transloads located near all of the major shale basins in the United States.

•

Evaluate both Greenfield and Brownfield expansion opportunities and other acquisitions. We will continue to leverage our reputation, processing capabilities and infrastructure to increase production, as well as explore other opportunities to expand our reserve base. We may accomplish this by developing Greenfield projects, where we can capitalize on our technical knowledge of geology, mining and processing and our strong reputation within local communities. For instance, we are evaluating the potential development of a Greenfield project in Eau Claire County, Wisconsin, which, depending on market conditions, could become operational as early as 2015 and potentially add 3,000,000 tons of annual frac sand capacity. Additionally, we are continuing to actively pursue acquisitions to grow, taking advantage of our asset footprint, our management’s experience with high-growth businesses, and our strong customer relationships. Our primary objective is to acquire assets complementary to our Oil & Gas segment, with a focus on mining, processing and logistics to further enhance our market presence, some of which assets have differing levels of frac sand quality. We prioritize acquisitions which provide opportunities to realize synergies (and, in some cases, the acquisition will only be accretive assuming synergies), including entering new geographic and frac sand product markets, acquiring attractive customer contracts, and improving operations. We are in active discussions to acquire assets fitting this strategy, which, if completed, would be “significant” under Regulation S-X and would require additional sources of financing. There can be no assurance that we reach a definitive agreement and complete any of these potential transactions. See the risk factors disclosed in Item 1A of Part I in our 2012 Annual Report, including the risk factor entitled, “If we cannot successfully complete acquisitions or integrate acquired businesses, our growth may be limited and our financial condition may be adversely affected.”

•

Maintain financial strength and flexibility. We intend to maintain financial strength and flexibility to enable us to pursue acquisitions and new growth opportunities as they arise. On December 31, 2012, we amended our Revolver to, among other items, increase the availability under the agreement by $15.0 million and extend the termination date of the agreement to October 31, 2016. On July 23, 2013,

we replaced our Revolver and refinanced our existing senior secured debt by amending our Term Loan, increasing the Term Loan amount by $115 million. As of September 30, 2013, we had $128.7 million of cash on hand and $40.7 million of available borrowings under our credit facilities.

How We Generate Our Sales

We derive our sales by mining and processing minerals that our customers purchase for various uses. Our sales are primarily a function of the price per ton realized and the volumes sold. In some instances, our sales also include a charge to recover transportation services we provide to our customers. Our transportation revenue fluctuates based on a number of factors, including the volume of product we transport under contract, service agreements with our customers, the mode of transportation utilized and the distance between our plants and customers.

We primarily sell our products under short-term price agreements or at prevailing market rates. For a limited number of customers, we sell under long-term, competitively-bid contracts. As of November 7, 2013, we have seven take-or-pay supply agreements with seven of our customers in the Oil & Gas Proppants segment with initial terms expiring between 2013 and 2016. These agreements define, among other commitments, the volume of product that our customers must purchase, the volume of product that we must provide and the price that we will charge and that our customers will pay for each product. As discussed in Part I, Item 1A of our 2012 Annual Report, “Risk Factors—A large portion of our sales is generated by our top customers, and the loss of, or significant reduction in, purchases by our largest customers could adversely affect our operations,” these customers may not continue to purchase the same levels of product in the future due to a variety of reasons, contract requirements notwithstanding. Prices under these agreements are generally fixed and subject to upward adjustment in response to certain cost increases. As a result, our realized prices may not grow at rates consistent with broader industry pricing. For example, during periods of rapid price growth, our realized prices may grow more slowly than those of competitors, and during periods of price decline, our realized prices may outperform industry averages. Additionally, at the time the take-or-pay supply agreements were signed, two of these customers provided advance payments for future shipments aggregating $27.0 million (the balance of these payments as recorded on the balance sheet as deferred revenue was zero as of September 30, 2013). A percentage of these advance payments was recognized as revenue with each ton of applicable product shipped to the customer. Collectively, sales to customers with supply agreements accounted for nearly 27% and 31% of our total sales revenues during the three months ended September 30, 2013 and 2012, respectively, and 31% and 18% for the nine months ended September 30, 2013 and 2012, respectively. Although sales under supply agreements, as opposed to short-term price agreements or at prevailing spot market rates, result in us realizing lower margins than we otherwise might during periods of high market prices, we believe such lower margins are offset by the benefits derived from the product mix and sales volume stability afforded by such supply agreements.

We invoice the majority of our customers on a per shipment basis, although for some larger customers, we consolidate invoices weekly or monthly. The amounts invoiced include the amount charged for the product, transportation costs (if paid by us) and costs for additional services as applicable, such as costs related to transload the product from railcars to trucks for delivery to the customer site.

The Costs of Conducting Our Business

The principal expenses involved in conducting our business are labor costs, electricity and drying fuel costs, maintenance and repair costs for our mining and processing equipment and facilities and transportation costs. We believe the majority of our operating costs are relatively stable in price, but can vary significantly based on the volume of product produced. We benefit from owning the majority of the mineral deposits that we mine and having long-term mineral rights leases or supply agreements for our other primary sources of raw material, which limit royalty payments.

Operating labor costs represented approximately 11% and 12% of our sales during each of the three months ended September 30, 2013 and 2012, and approximately 11% and 13% of our sales during the nine months ended September 30, 2013 and 2012, respectively. We employ a mix of union and non-union labor, with 47% of our workforce being unionized as of September 30, 2013. Our union contracts stipulate annual escalation factors for certain wages and benefits.

We incur significant electricity and drying fuel (principally natural gas) costs in connection with the operation of our processing facilities. Energy costs directly related to the production of our products represented 4% of our total sales during each of the three months ended September 30, 2013 and 2012, and 5% of our total sales during each of the nine months ended September 30, 2013 and 2012.

We capitalize the costs of our mining equipment and generally depreciate it over its expected useful life. Depreciation, depletion and amortization costs represented approximately 6% and 5% of our sales during the three months ended September 30, 2013 and 2012, and approximately 7% and 6% of our sales during the nine months ended September 30, 2013 and 2012, respectively. Preventive and remedial repair and maintenance costs that do not involve the replacement of major components of our equipment and facilities are expensed as incurred. These repair and maintenance costs can be significant due to the abrasive nature of our products and represented approximately 4% and 5% of our sales during the three months ended September 30, 2013 and 2012, respectively, and approximately 4% and 6% of our sales during the nine months ended September 30, 2013 and 2012, respectively.

Additionally, we incur expenses related to our corporate operations, including costs for the sales and marketing, research and development, finance, legal, and environmental, health and safety functions of our organization. These costs are principally driven by personnel expenses. In total, our selling, general and administrative costs represented approximately 9% of sales during each of the three and nine months ended September 30, 2013 and 2012. As a public company, we will continue to incur additional legal, accounting, insurance and other expenses that we had not incurred as a private company, including costs associated with public company reporting requirements. These requirements include compliance with the Sarbanes-Oxley Act of 2002 as well as other rules implemented by the SEC, and applicable stock exchange rules. We expect these rules and regulations to increase our legal and financial compliance costs and to make certain financial reporting and other activities more time consuming and costly.

Our effective income tax rate was approximately 21% and 31% of pretax earnings in the three months ended September 30, 2013 and 2012, respectively, and 25% and 28% of pretax earnings in the nine months ended September 30, 2013 and 2012, respectively. Historically, our actual effective tax rates have been lower than the statutory effective rate primarily due to the benefit received from statutory percentage depletion allowances.

How We Evaluate Our Business

Our management team evaluates our business using a variety of financial and operational metrics to analyze our performance. Our business is organized into two segments, Oil & Gas Proppants and Industrial & Specialty Products. We evaluate the performance of these segments based on their volumes sold, average realized price and contribution margin earned. Additionally, we consider a number of factors in evaluating the performance of the business as a whole, including total volumes sold, average realized price, segment contribution margin and Adjusted EBITDA. We view these metrics as important factors in evaluating our profitability and review these measurements frequently to analyze trends and make decisions.

Segment Contribution Margin

Segment contribution margin, a non-GAAP measure, is a key metric that management uses to evaluate our operating performance and to determine resource allocation between segments. Segment contribution margin excludes certain corporate costs not associated with the operations of the segment. These unallocated costs

include costs related to corporate functional areas such as sales, production and engineering, corporate purchasing, accounting, treasury, information technology, legal and human resources.

Adjusted EBITDA

Adjusted EBITDA, a non-GAAP measure, is included in this report because it is a key metric used by management to assess our operating performance and by our lenders to evaluate our covenant compliance. Our target performance goals under our incentive compensation plan are tied, in part, to our Adjusted EBITDA. In addition, for the quarter ended September 30, 2013, our Revolver contained a consolidated leverage ratio that we must meet as of the last day of any fiscal quarter whenever usage of the Revolver (other than certain undrawn letters of credit) exceeds 25% of the Revolver commitment, which is calculated based on our Adjusted EBITDA. Noncompliance with the financial ratio covenant contained in the Revolver could result in the acceleration of our obligations to repay all amounts outstanding under the Revolver and the Term Loan. Moreover, the Revolver and the Term Loan contained covenants that restricted, subject to certain exceptions, our ability to make permitted acquisitions, incur additional indebtedness, make restricted payments (including dividends) and retain excess cash flow based, in some cases, on our ability to meet leverage ratios calculated based on our Adjusted EBITDA.

Results of Operations for the Three Months Ended September 30, 2013 and 2012


	For the Three Months Ended September 30,				Percent Change
	2013		2012		’13 vs. ‘12
Sales
Oil & Gas Proppants	$	94,174	$	64,538		45.9	%
Industrial & Specialty Products		50,198		51,347		(2.2	)%

Total Sales	$	144,372	$	115,885		24.6	%

Sales

Sales increased $28.5 million, or 25%, to $144.4 million for the three months ended September 30, 2013 compared to $115.9 million for the three months ended September 30, 2012. Oil & Gas Proppants sales increased by $29.6 million, accounting for 100% of the total sales growth. Industrial & Specialty Products sales decreased $1.1 million as compared to the same period in 2012.

Oil & Gas Proppants sales increased $29.6 million, or 46%, to $94.2 million for the three months ended September 30, 2013 compared to $64.5 million for the three months ended September 30, 2012. The growth in sales revenue was due to an overall increase in tons of product sold as well as a higher proportion of sales through transloads, where transportation and handling costs are typically passed on to customers. Oil & Gas Proppants volume increased 283.1 thousand tons, or 37%, to 1,052.1 thousand tons during the three months ended September 30, 2013, driven by year over year growth in the demand for our frac sands and natural proppants. Average product selling price declined due to lower contract pricing effective at the beginning of 2013 and a softer pricing environment for some frac sand grades.

Industrial & Specialty Products sales decreased $1.1 million, or 2%, to $50.2 million for the three months ended September 30, 2013 compared to $51.3 million for the three months ended September 30, 2012, due to marginal decline in period over period sales volume of 56.6 thousand tons, or 5%, primarily due to weakness in sales to the glass market.

Cost of Goods Sold

Cost of goods sold increased $21.3 million, or 31%, to $91.0 million for the three months ended September 30, 2013 compared to $69.7 for the three months ended September 30, 2012. As a percentage of sales,

costs of goods sold increased from 60.2% for the three months ended September 30, 2012 to 63.0% for the three months ended September 30, 2013. The increase in cost of goods resulted from more tons sold and from higher transportation costs. Cost of goods sold as a percentage of sales increased due to additional transportation and handling costs driven by increased sales through transloads; these costs are typically passed on to customers.

For the three months ended September 30, 2013 and 2012, we incurred $15.5 million and $14.3 million of labor costs, respectively. The increase in labor costs incurred was due to producing and selling more tons. The percentage of sales decreased to 11% from 12% for the three months ended September 30, 2013 and 2012.

We incurred electricity and drying fuel costs of $6.3 million for the three months ended September 30, 2013 and $5.1 million for the three months ended September 30, 2012, reflecting more tons sold. The percentage of sales remained flat at 4% for the three months ended September 30, 2013 and 2012.

We incurred maintenance and repair costs of $5.7 million for the three months ended September 30, 2013 compared to $5.4 million for the three months ended September 30, 2012, slightly higher due to production volume. The percentage of sales decreased to 4% from 5% for the three months ended September 30, 2013 and 2012.

Selling, General and Administrative Expenses

Selling, general and administrative expenses increased $2.7 million, or 27%, to $12.8 million for the three months ended September 30, 2013 compared to $10.1 million for the three months ended September 30, 2012, driven by non-recurring expenses of $1.1 million related to our refinancing, $0.9 million of employment agency fees and $0.7 million of one-time litigation fees.

Depreciation, Depletion and Amortization

Depreciation, depletion and amortization expense was $9.2 million and $6.0 million for the three months ended September 30, 2013, and 2012, respectively. Year over year increases have been driven by continued capital spending associated with our growth and capacity expansion initiatives combined with increased depletion due to additional volume of mined silica sands. We expect depreciation, depletion and amortization expense to continue to grow due to anticipated capital spending in 2013.

Operating Income

Operating income increased $1.3 million, or 4%, to $31.4 million for the three months ended September 30, 2013 compared to $30.1 million for the three months ended September 30, 2012 guided by a 25% increase in sales, offset by 31% higher cost of goods sold, 27% higher selling, general and administrative expenses, and 53% higher depreciation, depletion, and amortization.

Interest Expense

Interest expense increased $0.8 million, or 24%, to $4.1 million for the three months ended September 30, 2013 compared to $3.3 million for the three months ended September 30, 2012 due to the increase in long-term debt.

Provision for Income Taxes

The provision for income taxes decreased $2.6 million, or 31%, to $5.7 million for the three months ended September 30, 2013, compared to $8.3 million for the three months ended September 30, 2012 driven by a lower effective tax rate. The effective tax rates were 21% and 31% for the three months ended September 30, 2013 and

2012, respectively. The decreased effective tax rate for the three months ended September 30, 2013 was primarily associated with the identification of research and development tax credits for the current year tax provision and also filed in our prior year tax returns.

Net Income/Loss

Net income was $21.3 million and $18.8 million for the three months ended September 30, 2013, and 2012, respectively. The year over year increase is due to the factors noted above.

Results of Operations for the Nine Months Ended September 30, 2013 and 2012


	For the Nine Months Ended September 30,				Percent Change
	2013		2012		’13 vs. ‘12
Sales
Oil & Gas Proppants	$	245,428	$	172,845		42.0	%
Industrial & Specialty Products		151,083		150,230		0.6	%

Total Sales	$	396,511	$	323,075		22.7	%

Sales

Sales increased $73.4 million, or 23%, to $396.5 million for the nine months ended September 30, 2013 compared to $323.1 million for the nine months ended September 30, 2012. Oil & Gas Proppants sales increased by $72.6 million, accounting for nearly 99% of the total sales growth. Industrial & Specialty Products sales increased $0.9 million, representing 1% of the growth in overall sales.

Oil & Gas Proppants sales increased $72.6 million, or 42%, to $245.4 million for the nine months ended September 30, 2013 compared to $172.8 million for the nine months ended September 30, 2012. The growth in sales revenue was driven by an overall increase in tons of product sold as well as a higher proportion of sales through transloads, where transportation and handling costs are typically passed on to customers. Oil & Gas Proppants volume increased 827.8 thousand tons, or 39%, to 2,960.8 thousand tons during the nine months ended September 30, 2013, driven by continued year over year growth in the demand for our frac sands and natural proppants. Average product selling price declined due to lower contract pricing effective at the beginning of 2013 and a softer pricing environment for some frac sand grades.

Industrial & Specialty Products sales increased $0.9 million, or 0.6%, to $151.1 million for the nine months ended September 30, 2013 compared to $150.2 million for the nine months ended September 30, 2012. The improvement in sales was due to a shift of product mix to higher value products, offset by a decrease in volume of 193.6 thousand tons, or 6%, to 3,083.9 thousand tons during the nine months ended September 30, 2013.

Cost of Goods Sold

Cost of goods sold increased $60.2 million, or 32%, to $245.7 for the nine months ended September 30, 2013 compared to $185.5 million for the nine months ended September 30, 2012. As a percentage of sales, costs of goods sold increased from 57.4% for the nine months ended September 30, 2012 to 62.0% for the nine months ended September 30, 2013. The increase in cost of goods sold resulted from more tons sold and from higher transportation costs. Cost of goods sold as a percentage of sales increased due to additional transportation and handling costs driven by increase sales through transloads; these costs are typically passed on to customers.

For the nine months ended September 30, 2013 and 2012, we incurred $45.4 million and $40.9 million of labor costs, respectively. The increase in labor costs incurred was due to producing and selling more tons;

however labor costs as a percentage of sales decreased from 13% for nine months ended September 30, 2012 to 11% for the nine months ended September 30, 2013 due to operational efficiencies.

We incurred electricity and drying fuel costs of $19.1 million and $15.7 million for the nine months ended September 30, 2013 and 2012, reflecting more tons sold. The percentage of sales remained flat at 5% for the nine months ended September 30, 2013 and 2012.

We incurred maintenance and repair costs of $16.3 million for the nine months ended September 30, 2013 compared to $17.0 million for the nine months ended September 30, 2012 as a result of cost improvement programs at the plant level. The percentage of sales decreased to 4% from 5% for the nine months ended September 30, 2013 and 2012, respectively.

Selling, General and Administrative Expenses

Selling, general and administrative expenses increased $5.5 million, or 18%, to $35.3 million for the nine months ended September 30, 2013 compared to $29.8 million for the nine months ended September 30, 2012, driven by approximately $2.1 million of non-recurring expenses related to secondary offerings of our common stock by Golden Gate Capital in March 2013 and June 2013 and business development activities related to our growth and expansion initiatives, $1.1 million related to our refinancing, $0.9 million of employment agency fees and $0.7 million of one-time litigation fees. Also, we continue to incur additional public company costs as well as costs related to growth and expansion initiatives, which include legal, audit and accounting, and consulting and advisory expenses, which increased nearly $0.3 million period over period.

Depreciation, Depletion and Amortization

Depreciation, depletion and amortization expense was $26.3 million and $17.9 million for the nine months ended September 30, 2013, and 2012, respectively. Year over year increases have been driven by continued increases in capital spending combined with increased depletion due to additional volume of mined silica sands. We expect depreciation, depletion and amortization expense to continue to grow due to anticipated capital spending in 2013.

Operating Income

Operating income decreased $0.7 million, or 0.8%, to $89.2 million for the nine months ended September 30, 2013 compared to $89.9 million for the nine months ended September 30, 2012 driven by a 32% increase in cost of goods sold, a 18% increase in selling, general and administrative expenses, and a 47% increase in depreciation, depletion and amortization, offset by a 23% increase in sales.

Interest Expense

Interest expense increased $0.7 million, or 7%, to $11.3 million for the nine months ended September 30, 2013 compared to $10.6 million for the nine months ended September 30, 2012 due to the increase in long-term debt.

Provision for Income Taxes

The provision for income taxes decreased $3.5 million, or 15%, to $19.1 million for the nine months ended September 30, 2013, compared to $22.6 million for the nine months ended September 30, 2012 driven by a decrease in pre-tax income of 3% and a lower effective tax rate. The effective tax rates were 25% for the nine months ended September 30, 2013 and 28% for the nine months ended September 30, 2012.

Net Income/Loss

Net income was $58.8 million and $57.4 million for the nine months ended September 30, 2013, and 2012, respectively. The year over year increase is due to the factors noted above.

Liquidity and Capital Resources

Overview

Our principal liquidity requirements have historically been to service our debt, to meet our working capital, capital expenditure and mine development expenditure needs, to return cash to our stockholders, and to finance acquisitions. We have historically met our liquidity and capital investment needs with funds generated through operations. We have historically funded our acquisitions through borrowings under our credit facilities and equity investments. Our working capital is the amount by which current assets exceed current liabilities and is a measure of our ability to pay our liabilities as they become due. As of September 30, 2013, our working capital was $245.4 million and we had $40.7 million of availability under the Revolver. See “Credit Facilities—Revolver.”

We believe that cash generated through operations and our financing arrangements will be sufficient to meet working capital requirements, anticipated capital expenditures, scheduled debt payments for at least the next 12 months and any dividends declared such as the one declared by our Board of Directors on October 24, 2013 of $0.125 per share to common stockholders of record at the close of business on December 16, 2013, and payable on January 3, 2014.

Management and our Board of Directors remain committed to evaluating additional ways of creating shareholder value. Any determination to pay dividends and other distributions in cash, stock, or property by Holdings in the future will be at the discretion of our Board of Directors and will be dependent on then-existing conditions, including our business conditions, our financial condition, results of operations, liquidity, capital requirements, contractual restrictions including restrictive covenants contained in debt agreements, and other factors. Additionally, because we are a holding company, our ability to pay dividends on our common stock may be limited by restrictions on the ability of our subsidiaries to pay dividends or make distributions to us, including restrictions under the terms of the agreements governing our indebtedness.

Cash Flow Analysis

A summary of operating, investing and financing activities is shown in the following table:


	For the Nine Months Ended September 30,						Percent Change
	2013			2012			’13 vs. ‘12
Net cash provided by (used in):
Operating activities	$	28,527		$	69,989			(59.2	)%
Investing activities		(71,668	)		(73,613	)		2.6	%
Financing activities		110,806			37,435			196.0	%

Net Cash Provided by Operating Activities

Operating activities consist primarily of net income adjusted for non-cash items, including depreciation and amortization, deferred revenue, deferred income taxes, equity-based compensation and the effect of working capital changes.

Net cash provided by operating activities was $28.5 million for the nine months ended September 30, 2013 compared to net cash provided by operating activities of $70.0 million for the nine months ended September 30, 2012. This $41.5 million decrease in cash provided by operations was primarily the result of a federal tax extension payment of $19.6 million for the 2012 tax year paid in March 2013, $11.0 million in 2013 federal estimated tax payments paid as of September 30, 2013, as well as a $16.4 million increase in finished goods inventory, which is primarily due to inventory held at transloads.

Net Cash Used in Investing Activities

Investing activities consist primarily of capital expenditures for growth and maintenance.

Net cash used in investing activities was $71.7 million in the nine months ended September 30, 2013. This use of cash is due to capital expenditures, which totaled $46.8 million, as well as $25 million used for the purchase of short-term investments during the nine months ended September 30, 2013. Capital expenditures in 2013 were made for the continuing engineering, procurement and construction of our two Greenfield raw sand plants in Sparta, Wisconsin, and Utica, Illinois, for the purchase of an existing silica sand processing facility from Quality Sand Products LLC (QSP) in Peru, Illinois, for the construction of our transloads, and for maintenance capital. Net cash used in investing activities was $73.6 million in the nine months ended September 30, 2012. This use of cash is due to capital expenditures which totaled $74.9 million for the nine months ended September 30, 2012, primarily for the construction of our resin coating production facility in Rochelle, Illinois and the engineering, procurement and construction of a Greenfield raw sand plant in Sparta, Wisconsin. Additionally, we have invested $7.0 million for new equipment, maintenance and upgrades to improve efficiency at our current production facilities, and acquired $0.7 million of additional land and reserves during the period.

Management anticipates that our capital expenditures for 2013 will be approximately $60-70 million, which is primarily associated with growth and maintenance capital.

Net Cash Provided by Financing Activities

Financing activities consist primarily of equity issuances, capital contributions, borrowings and repayments related to the Revolver and Term Loan, as well as fees and expenses paid in connection with our credit facilities and outstanding checks to our vendors.

Net cash provided by financing activities was $110.8 million in the nine months ended September 30, 2013. During the period, we had an increase in borrowings under our refinanced Term Loan of $373.8 million and $6.5 million of proceeds from options exercised, which was offset by a $257.0 million repayment of our existing long-term debt, $6.6 million in dividends paid, $4.1 million in financing fees, and a $1.7 million change in our book overdraft.

Net cash provided by financing activities was $37.4 million in the nine months ended September 30, 2012. During the period, we amended and restated the Term Loan to reduce the covenants and restrictions on our activities. In connection with the amendment, we incurred $1.3 million in financing fees which have been capitalized and were being amortized over the remaining life of the loan.

On January 31, 2012, we completed an initial public offering of 2,941,176 shares of our common stock at an offering price of $17.00 per share for aggregate proceeds of approximately $50.0 million (the “IPO”). We received net proceeds of approximately $40.8 million, after deducting $3.5 million of underwriting discounts and commissions and offering expenses of $5.7 million.

Simultaneously with the IPO, GGC Holdings, our sole stockholder prior to the IPO and now largest stockholder, contributed to us all of the stock of its wholly-owned subsidiary, GGC RCS Holdings, Inc., whose operating subsidiary is Coated Sand Solutions, LLC. Prior to this transaction, GGC RCS Holdings, Inc. had a $15.0 million note payable to GGC Holdings, which, together with accrued interest of $1.7 million, was converted to an equity contribution by GGC Holdings, simultaneously to the IPO.

Share Repurchase Program

On June 11, 2012, the Board of Directors authorized us to repurchase up to $25.0 million of our common stock. The authorization was initially for a period of 18 months, concluding on December 11, 2013, but on November 4, 2013, the Board of Directors extended the repurchase program through December 11, 2014. We are authorized to repurchase, from time to time, shares of our outstanding common stock on the open market or in privately negotiated transactions. Stock repurchases will be funded using our available cash. The timing and amount of stock repurchases will depend on a variety of factors, including the market conditions as well as

corporate and regulatory considerations. The share repurchase program may be suspended, modified or discontinued at any time and we have no obligation to repurchase any additional amount of our common stock under the program. We intend to make all repurchases in compliance with applicable regulatory guidelines and to administer the plan in accordance with applicable laws, including Rule 10b-18 of the Securities Exchange Act of 1934, as amended.

The following table presents the total number of shares of our common stock that we purchased during the third quarter of fiscal 2013, the average price paid per share, the number of shares that we purchased as part of our publicly announced repurchase program, and the approximate dollar value of shares that still could have been purchased at the end of the applicable fiscal period pursuant to our June 2012 repurchase program:


Period	Total Number of Shares Purchased		Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Program⁽¹⁾		Maximum Dollar Value of Shares that May Yet Be Purchased Under the Program⁽¹⁾
July 2013		—	$	—		—
August 2013		—	$	—		—
September 2013		—	$	—		—

Total as of September 30, 2013		—	$	—		—	$	23,928,275

⁽¹⁾	The program covering the repurchase of up to $25.0 million of our common stock was announced on June 12, 2012. This program expires on December 11, 2014.

Subsequent to September 30, 2013, we have not repurchased any additional shares of our common stock. As of November 7, 2013, we are authorized to repurchase up to $23.9 million of our common stock under the program.

Credit Facilities

Revolver

On August 9, 2007, we entered into the Revolver with various banks and other financial institutions as lenders thereunder and Wells Fargo Bank, National Association (successor by merger to Wachovia Bank, National Association) as administrative agent and lender.

On January 31, 2012, the Revolver was amended and restated to reduce the covenants and restrictions on our activities. The Revolver, as amended, contained customary covenants and restrictions on our activities related to, among other things: the incurrence of additional indebtedness; liens; dividends and distributions; investments, acquisitions and speculative transactions; contingent obligations; transactions with affiliates; fundamental changes to our business, property and assets; insurance; sale lease-backs; the ability to change the nature of our business, our fiscal year and our accounting policies; the ability to amend or waive any of the terms of any permitted subordinated debt, the Term Loan and our organizational documents; designations of senior debt other than the Revolver obligations and the Term Loan obligations; and the performance of material contracts, including intellectual property licenses. The Revolver also required that we maintain (a) during any fiscal quarter, if excess availability fell below $6.5 million, a fixed charge coverage ratio of not less than 1.10 to 1.00 until excess availability was equal to or greater than $10.0 million and (b) aggregate excess availability of not less than $5.0 million at all times.

On December 31, 2012, we again amended our Revolver. The primary revisions to the Revolver included an increase of the commitment under the Agreement from $35 million to $50 million, and the letter of credit sublimit from $15 million to $20 million; provided, however, that the aggregate principal amount of the loans and letters of credit obligations outstanding at any one time did not exceed the borrowing base as calculated

pursuant to the Agreement. The amendment also extended the termination date of the Revolver from October 31, 2015 to October 31, 2016, reduced prices and fees on borrowings, letters of credit and unused commitments and added an additional subsidiary, Coated Sand Solutions, as a co-borrower.

On July 23, 2013, in connection with the refinancing discussed below, we terminated the existing Revolver and replaced it with a $50 million new Revolver that may also be used for swingline loans (up to $5 million) or letters of credit (up to $20 million). The new Revolver will expire on July 23, 2018. We had no borrowings outstanding as of September 30, 2013 and $9.3 million of outstanding letters of credit, which left $40.7 million available under the Revolver.

Borrowings under the Revolver were subject to the accuracy of representations and warranties in all material respects and the absence of any defaults under the Revolver and the Term Loan.

Term Loan

On November 25, 2008, in connection with our acquisition by an affiliate of Golden Gate Capital, we entered into the Term Loan with various banks and other financial institutions as lenders thereunder and BNP Paribas, as administrative agent. On May 7, 2010, the Term Loan was amended and restated to, among other things, (1) increase the aggregate principal amount available thereunder from $102.0 million to $165.0 million and (2) add an incremental term loan facility in the maximum aggregate principal amount of $25.0 million.

On June 8, 2011, the Term Loan was again amended and restated to, among other things, (1) further increase the aggregate principal amount available thereunder to $260.0 million and (2) increase the maximum aggregate principal amount under the incremental term loan facility to $50.0 million (or $100.0 million if the total leverage ratio on a pro forma basis would not exceed 3x).

On January 31, 2012, we again amended and restated the Term Loan to reduce the covenants and restrictions on our activities. The Term Loan, as amended, contained customary covenants and restrictions on our activities related to, among other things: the incurrence of additional indebtedness; liens and negative pledges; dividends and distributions; investments and acquisitions; contingent obligations; transactions with stockholders (holders of at least 10% of the equity securities) and affiliates; fundamental changes to our business, property and assets; sale lease-backs; the ability to change the nature of our business, our fiscal year and our accounting policies; the ability to amend or waive any of the terms of the Revolver and other material agreements; designations of senior debt other than the Term Loan obligations and the Revolver obligations; and the performance of material contracts, including real property leases and intellectual property licenses.

Refinancing

On July 23, 2013, we refinanced our existing senior secured debt by amending our Term Loan. The Term Loan amendment refinanced our existing senior debt by entering into a new $425 million senior secured credit facility, consisting of a $375 million Term Loan and the new $50 million Revolver discussed above. The Term Loan amendment also, among other things, removed and amended certain financial and other covenants to provide additional operating flexibility, and lowered interest rates on borrowed amounts. The Term Loan will expire on July 23, 2020. A portion of the Term Loan proceeds were used to repay our existing $255 million term loan and amounts outstanding under the existing Revolver and to pay for fees and expenses associated with the refinancing. The additional proceeds available from the Term Loan will be available for working capital, capital expenditures, acquisitions, dividends, and other general corporate purposes.

Off-Balance Sheet Arrangements

We have no off-balance sheet arrangements that have or are likely to have a current or future material effect on our financial condition, changes in financial condition, sales, expenses, results of operations, liquidity, capital expenditures or capital resources.

Contractual Obligations

There have been no significant changes outside the ordinary course of business to our “Contractual Obligations” table in Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” of our 2012 Annual Report.

As described in Note I, on July 23, 2013, we refinanced our existing senior secured debt by amending our Term Loan and replacing our existing Revolver. As of September 30, 2013, debt increased by $116.9 million to $372.3 million compared to $255.4 million at December 31, 2012. The increase was due to principal repayments of the existing Term Loan of $257.0 million, offset by the refinancing of the senior secured credit facility of $373.8 million. As of September 30, 2013, future debt payments excluding the Revolver, plus interest, totaled $476.1 million and are due as follows: $9.3 million in 2013; $18.6 million in 2014; $18.4 million in 2015; $18.3 million in 2016; $18.1 million in 2017; $18.0 million in 2018; $17.8 million in 2019; and $357.6 million thereafter.

Environmental Matters

We are subject to various federal, state and local laws and regulations governing, among other things, hazardous materials, air and water emissions, environmental contamination and reclamation and the protection of the environment and natural resources. We have made, and expect to make in the future, expenditures to comply with such laws and regulations, but cannot predict the full amount of such future expenditures. We may also from time to time incur fines and penalties associated with noncompliance with such laws and regulations. In particular, on September 8, 2011 we voluntarily disclosed potential violations of air emission permits at our Rockwood, Michigan facility to the EPA and the Michigan Department of Environmental Quality, and while no proceedings have been instituted at this time by either agency we could incur penalties or be subject to other requirements in the future as a result of such potential violations. As of September 30, 2013, we had $8.7 million accrued for future reclamation costs, as compared to $6.7 million as of December 31, 2012.

We discuss certain environmental matters relating to our various production and other facilities, certain regulatory requirements relating to human exposure to crystalline silica and our mining activity and how such matters may affect our business in the future under Part I, Item 1A, “Risk Factors” and Part I, Item 3, “Legal Proceedings” in our 2012 Annual Report.

Non-GAAP Financial Performance Measures

Segment Contribution Margin

Oil & Gas Proppants contribution margin increased $5.9 million, or 17%, to $40.1 million for the three months ended September 30, 2013 compared to $34.2 million for the three months ended September 30, 2012. Oil & Gas Proppants contribution margin increased $9.2 million, or nearly 9%, to $111.8 million for the nine months ended September 30, 2013 compared to $102.6 million for the nine months ended September 30, 2012. Both increases were due to the following specific factors: increased sales due to an increase in tons of product sold driven by continued year over year growth in the demand for our frac sands and natural proppants; offset by slightly lower average selling prices due to lower contract pricing effective at the beginning of 2013 and a softer pricing environment for some frac sand grades; also offset by increased cost of goods sold as a percentage of sales due to additional transportation and handling costs driven by increased sales through transloads (these costs are typically passed onto customers).

Industrial & Specialty Products contribution margin increased $0.3 million, or 2%, to $14.5 million for the three months ended September 30, 2013, compared to $14.2 million for the three months ended September 30, 2012 due to the following specific factors: increased sales of higher value products, offset by a marginal decline in sales volume primarily due to weakness in sales to the glass market.

Industrial & Specialty Products contribution margin increased $2.6 million, or 6%, to $43.2 million for the nine months ended September 30, 2013 compared to $40.6 million for the nine months ended September 30, 2012

due to the following specific factors: a shift of product mix to higher value products and lower labor costs and lower maintenance and repair costs as a percentage of sales, offset by a decrease in volume.

Segment contribution margin is not a measure of our financial performance under GAAP. For more detail on the reconciliation of segment contribution margin to its most directly comparable GAAP financial measure, income (loss) before income taxes, see Note U to our Financial Statements in Part I, Item 1 of this Quarterly Report on Form 10-Q.

Adjusted EBITDA

Adjusted EBITDA is not a measure of our financial performance or liquidity under GAAP and should not be considered as an alternative to net income as a measure of operating performance, cash flows from operating activities as a measure of liquidity or any other performance measure derived in accordance with GAAP. Additionally, Adjusted EBITDA is not intended to be a measure of free cash flow for management’s discretionary use, as it does not consider certain cash requirements such as interest payments, tax payments and debt service requirements. Adjusted EBITDA contains certain other limitations, including the failure to reflect our cash expenditures, cash requirements for working capital needs and cash costs to replace assets being depreciated and amortized, and excludes certain non-recurring charges. Management compensates for these limitations by relying primarily on our GAAP results and by using Adjusted EBITDA only supplementally. Our measure of Adjusted EBITDA is not necessarily comparable to other similarly titled captions of other companies due to potential inconsistencies in the methods of calculation.

The following table sets forth a reconciliation of net income, the most directly comparable GAAP financial measure, to Adjusted EBITDA.


	Three Months Ended September 30,					Nine Months Ended September 30,
	2013		2012			2013		2012
Net income	$	21,334	$	18,796		$	58,803	$	57,360
Total interest expense, net of interest income		4,127		3,276			11,201		10,422
Provision for taxes		5,739		8,302			19,103		22,621
Total depreciation, depletion and amortization expenses		9,152		5,968			26,320		17,920

EBITDA		40,352		36,342			115,427		108,323
Non-recurring expense (income)⁽¹⁾		—		(30	)		—		(469	)
Transaction expenses⁽²⁾		—		—			—		156
Loss on early extinguishment of debt⁽³⁾		480		—			480		—
Non-cash incentive compensation⁽⁴⁾		854		515			2,236		1,662
Post-employment expenses (excluding service costs)⁽⁵⁾		382		335			1,554		1,344
Other adjustments allowable under our existing credit agreements⁽⁶⁾		2,956		357			5,099		602

Adjusted EBITDA	$	45,024	$	37,519		$	124,796	$	111,618

⁽¹⁾	Includes the gain on sale of assets for the nine months ended September 30, 2012.

⁽²⁾	Includes fees and expenses related to the January 27, 2012 amendment of our Term Loan and Revolver.

⁽³⁾	Includes write-offs of debt issuance costs, legal fees and a prepayment penalty related to the early extinguishment of debt.

⁽⁴⁾	Includes vesting of incentive equity compensation issued to our employees.

⁽⁵⁾

Includes net pension cost and net post-retirement cost relating to pension and other post-retirement benefit obligations during the applicable period, but in each case excluding the service cost relating to benefits earned during such period. See Note R to our Consolidated Financial Statements in Part I, Item 1 of this Quarterly Report on Form 10-Q.

⁽⁶⁾

Reflects miscellaneous adjustments permitted under the Term Loan and the Revolver, including such items as expenses related to our refinancing, employment agency fee, secondary stock offerings by Golden Gate Capital, reviewing growth initiatives and potential acquisitions and one-time litigation fees.

Critical Accounting Estimates

Our unaudited condensed consolidated financial statements have been prepared in conformity with GAAP, which requires management to make estimates and assumptions that affect the reported amount of assets and liabilities at the date of our financial statements and the reported amounts of revenues and expenses during the reporting period. While we do not believe that the reported amounts would be materially different, application of these policies involves the exercise of judgment and the use of assumptions as to future uncertainties and, as a result, actual results could differ from these estimates. We evaluate our estimates and judgments on an ongoing basis. We base our estimates on experience and on various other assumptions that are believed to be reasonable under the circumstances. All of our significant accounting policies, including certain critical accounting policies, are disclosed in our 2012 Annual Report.

Recent Accounting Pronouncements

New accounting guidance that we have recently adopted, as well as accounting guidance that has been recently issued but not yet adopted by us, are included in Note B to our Financial Statements in Part I, Item 1 of this Quarterly Report on Form 10-Q.

Availability of Reports; Website Access; Other Information

Our internet address is http://www.ussilica.com. Through “Investor Relations”—“SEC Filings” on our home page, we make available free of charge our Annual Report on Form 10-K, our Quarterly Reports on Form 10-Q, our proxy statements, our Current Reports on Form 8-K, SEC Forms 3, 4 and 5 and any amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. Our reports filed with the SEC are also made available to read and copy at the SEC’s Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549. You may obtain information about the Public Reference Room by contacting the SEC at 1-800-SEC-0330. Reports filed with the SEC are also made available on its website at www.sec.gov.

Copies of our Corporate Governance Guidelines, our Audit Committee and Compensation and Governance Committee charters, the Code of Conduct for our Board of Directors and Code of Conduct and Ethics for U.S. Silica employees (including the chief executive officer, chief financial officer and corporate controller) can also be found on our website. Any amendments or waivers to the Code of Conduct and Ethics applicable to the chief executive officer, chief financial officer and corporate controller can also be found in the “Investor Relations” section of the U.S. Silica website. Stockholders may also request a free copy of these documents from: U.S. Silica Holdings, Inc., attn.: Investor Relations, 8490 Progress Drive, Suite 300, Frederick, Maryland 21701 (phone: (855) SILICA-7), or IR@ussilica.com.

ITEM 3.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We are exposed to certain market risks, which exist as a part of our ongoing business operations. We use derivative instruments, where appropriate, to manage these risks. As a matter of policy, we do not engage in trading or speculative transactions. Refer to Note M to our Financial Statements in Part I, Item 1 of this Quarterly Report on Form 10-Q for further information on our derivative financial instruments.

Interest Rate Risk

We may use interest rate derivatives in the normal course of our business to manage our interest cost and the risks associated with changing interest rates. These hedge agreements are used to exchange the difference between fixed and variable-rate interest amounts to an agreed-upon notional principal amount. We do not use derivative financial instruments for trading or speculative purposes. By their nature, all such instruments involve risk, including the possibility that a loss may occur from the failure of another party to perform according to the terms of a contract (credit risk) or the possibility that future changes in market price may make a financial instrument less valuable or more onerous (market risk). As is customary for these types of instruments, we do not require collateral or other security from other parties to these instruments. In management’s opinion, there is no significant risk of loss in the event of nonperformance of the counterparties to these financial instruments.

Although we have determined that the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by us and our counterparties. However, as of September 30, 2013, we have assessed that the impact of the credit valuation adjustments on the overall valuation of our derivative positions is not significant. As a result, we have determined that our derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy.

The following table summarizes the fair value of our derivative instruments at September 30, 2013 and December 31, 2012.


			September 30, 2013						December 31, 2012
	Maturity Date		Contract/Notional Amount		Carrying Amount		Fair Value		Contract/Notional Amount		Carrying Amount		Fair Value
Interest rate cap agreement⁽¹⁾		2013	$	—	$	—	$	—	$	130 million	$	—	$	—
		2016	$	188 million	$	150	$	150	$	—	$	—	$	—

⁽¹⁾	Agreements limit the LIBOR floating interest rate base to 4%.

Assuming that LIBOR is greater than the 1% minimum base rate on the Term Loan, a hypothetical increase or decrease in interest rates by 1% would have changed our interest expense by $0.2 for the three months ended September 30, 2013 and $0.6 for the nine months ended September 30, 2013.

Market Risk

We are exposed to various market risks, including changes in interest rates. Market risk related to interest rates is the potential loss arising from adverse changes in interest rates. We do not believe that inflation has a material impact on our financial position or results of operations during periods covered by the financial statements included in this Quarterly Report on Form 10-Q.

Credit Risk

We are subject to risks of loss resulting from nonpayment or nonperformance by our customers. We examine the creditworthiness of third-party customers to whom we extend credit and manage our exposure to credit risk through credit analysis, credit approval, credit limits and monitoring procedures, and for certain transactions, we may request letters of credit, prepayments or guarantees, although collateral is generally not required.

ITEM 4.

CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our chief executive officer and chief financial officer, evaluated the effectiveness of our disclosure controls and procedures as of September 30, 2013. The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of a company that are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure. Based on the evaluation of our disclosure controls and procedures as of September 30, 2013, our chief executive officer and chief financial officer concluded that, as of such date, our disclosure controls and procedures were effective at the reasonable assurance level.

Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable, and not absolute, assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting identified in management’s evaluation pursuant to Rules 13a-15(d) or 15d-15(d) of the Exchange Act during the quarter ended September 30, 2013 that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II—OTHER INFORMATION

ITEM 1.

LEGAL PROCEEDINGS

In addition to the matter described below, we are subject to various legal proceedings, claims, and governmental inspections, audits or investigations arising out of our business which cover matters such as general commercial, governmental regulations, antitrust and trade regulations, product liability, environmental, intellectual property, employment and other actions. Although the outcomes of these routine claims cannot be predicted with certainty, in the opinion of management, the ultimate resolution of these matters will not have a material adverse effect on our financial position or results of operations.

Prolonged inhalation of excessive levels of respirable crystalline silica dust can result in silicosis, a disease of the lungs. Breathing large amounts of respirable silica dust over time may injure a person’s lungs by causing scar tissue to form. Crystalline silica in the form of quartz is a basic component of soil, sand, granite and most other types of rock. Cutting, breaking, crushing, drilling, grinding and abrasive blasting of or with crystalline silica containing materials can produce fine silica dust, the inhalation of which may cause silicosis, lung cancer and possibly other diseases including immune system disorders such as scleroderma. Sources of exposure to respirable crystalline silica dust include sandblasting, foundry manufacturing, crushing and drilling of rock, masonry and concrete work, mining and tunneling, and cement and asphalt pavement manufacturing.

Since at least 1975, we and/or our predecessors have been named as a defendant, usually among many defendants, in numerous lawsuits brought by or on behalf of current or former employees of our customers alleging damages caused by silica exposure. Prior to 2001, the number of silicosis lawsuits filed annually against the commercial silica industry remained relatively stable and was generally below 100, but between 2001 and 2004 the number of silicosis lawsuits filed against the commercial silica industry substantially increased. This increase led to greater scrutiny of the nature of the claims filed, and in June 2005 the U.S. District Court for the Southern District of Texas issued an opinion in the former federal silica multi-district litigation remanding almost all of the 10,000 cases then pending in the multi-district litigation back to the state courts from which they originated for further review and medical qualification, leading to a number of silicosis case dismissals across the United States. In conjunction with this and other favorable court rulings establishing “sophisticated user” and “no duty to warn” defenses for silica producers, several states, including Texas, Ohio and Florida, have passed medical criteria legislation that requires proof of actual impairment before a lawsuit can be filed.

As a result of the above developments, the filing rate of new claims against us over the past three years has decreased to below pre-2001 levels, and we were named as a defendant in ten, three and two new silicosis cases filed in 2010, 2011 and 2012, respectively. During the first nine months of 2013, three additional claims were brought against us. As of November 7, 2013, there are a total of approximately 92 active silica-related products liability claims pending in which we were a defendant and approximately 3,146 inactive claims. Almost all of the claims pending against us arise out of the alleged use of our silica products in foundries or as an abrasive blast media, and involve various other defendants. Prior to the fourth quarter of 2012, we had insurance policies for both our predecessors that cover certain claims for alleged silica exposure for periods prior to certain dates in 1985 and 1986 (with respect to certain insurance). As a result of a settlement with a former owner of ours and its insurers in the fourth quarter of 2012, some of these policies are no longer available to us, and we will not seek reimbursement for any defense costs or claim payments from these policies. Other insurance policies, however, continue to remain available to us and will continue to make such payments on our behalf.

The silica-related litigation brought against us to date has not resulted in material liability to us. However, we continue to have silica-related products liability claims filed against us, including claims that allege silica exposure for periods for which we do not have insurance coverage. Any such pending or future claims or inadequacies of our insurance coverage could have a material adverse effect on our business, reputation or results of operations. For more information regarding silica-related litigation, see Part I, Item 1A of our 2012 Annual Report “Risk Factors—Risks Related to Our Business—Silica-related health issues and litigation could have a material adverse effect on our business, reputation or results of operations.”

ITEM 1A.

RISK FACTORS

As of September 30, 2013, there have been no material changes to the risk factors disclosed in Item 1A of Part I in our 2012 Annual Report.

ITEM 2.

UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Share Repurchase Program

Information required by this item is set forth in Part I, Item 2 of this Quarterly Report on Form 10-Q under the caption “Liquidity and Capital Resources—Share Repurchase Program” and is incorporated herein by reference.

ITEM 3.

DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4.

MINE SAFETY DISCLOSURES

Safety is one of our core values, and we strive for excellence in the achievement of a workplace free of injuries and occupational illnesses. Our health and safety leadership team has developed comprehensive safety policies and standards, which include detailed standards and procedures for safe production, addresses topics such as employee training, risk management, workplace inspection, emergency response, accident investigation and program auditing. We place special emphasis on the importance of continuous improvement in occupational health, personal injury avoidance and prevention, emergency preparedness, and property damage elimination. In addition to strong leadership and involvement from all levels of the organization, these programs and procedures form the cornerstone of our safety initiatives, ensuring that employees are provided a safe and healthy environment and are intended as a means to reduce workplace accidents, incidents and losses, comply with all mining-related regulations and provide support for both regulators and the industry to improve mine safety. While we want to have productive operations in full regulatory compliance, we know it is equally essential that we motivate and train our people to think, practice and feel a personal responsibility for health and safety on and off the job.

All of our production facilities, with the exception of our resin-coated sand facility, are classified as mines and are subject to regulation by the Federal Mine Safety and Health Administration (“MSHA”) under the Federal Mine Safety and Health Act of 1977 (the “Mine Act”). MSHA inspects our mines on a regular basis and issues various citations and orders when it believes a violation has occurred under the Mine Act. Following passage of The Mine Improvement and New Emergency Response Act of 2006, MSHA significantly increased the numbers of citations and orders charged against mining operations. The dollar penalties assessed for citations issued has also increased in recent years. Information concerning mine safety violations or other regulatory matters required by Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K (17 CFR 229.104) is included in Exhibit 95.1 to this Quarterly Report filed on Form 10-Q.

ITEM 5.

OTHER INFORMATION

None.

ITEM 6.

EXHIBITS

The information called for by this Item is incorporated herein by reference from the Exhibit Index included in this Quarterly Report on Form 10-Q.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, this 7^th day of November, 2013.


U.S. Silica Holdings, Inc.

/s/ DONALD A. MERRIL
Name:		Donald A. Merril
Title:		Chief Financial Officer
		(Principal Financial Officer)

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EXHIBIT INDEX


		Incorporated by Reference
Exhibit Number	Description	Form	File No.	Exhibit	Filing Date

3.1	Second Amended and Restated Certificate of Incorporation of U.S. Silica Holdings, Inc., effective January 31, 2012.	8-K	001-35416	3.1	February 6, 2012

3.2	Second Amended and Restated Bylaws of U.S. Silica Holdings, Inc., effective January 31, 2012.	8-K	001-35416	3.2	February 6, 2012

4.1	Specimen Common Stock Certificate.	S-1/A	333-175636	4.1	December 7, 2011

4.2	Registration Rights Agreement, dated January 31, 2012, by and between U.S. Silica Holdings, Inc. and GGC USS Holdings, LLC.	8-K	001-35416	4.2	February 6, 2012

10.1	Amendment No. 3 to Second Amended and Restated Credit Agreement, dated as of July 23, 2013	8-K	001-35416	10.1	July 29, 2013

31.1*	Rule 13a-14(a)/15(d)-14(a) Certification by Bryan A. Shinn, Chief Executive Officer.

31.2*	Rule 13a-14(a)/15(d)-14(a) Certification by Donald A. Merril, Chief Financial Officer.

32.1*	Section 1350 Certification by Bryan A. Shinn, Chief Executive Officer.

32.2*	Section 1350 Certification by Donald A. Merril, Chief Financial Officer.

95.1*	Mine Safety Disclosure

99.1*	Consent of The Freedonia Group, Inc.

101*	101.INS XBRL Instance

	101.SCH XBRL Taxonomy Extension Schema

	101.CAL XBRL Taxonomy Extension Calculation

	101.LAB XBRL Taxonomy Extension Labels

	101.PRE XBRL Taxonomy Extension Presentation

	101.DEF XBRL Taxonomy Extension Definition

*	Filed herewith

We will furnish any of our shareowners a copy of any of the above Exhibits not included herein upon the written request of such shareowner and the payment to U.S. Silica Holdings, Inc. of the reasonable expenses incurred in furnishing such copy or copies.

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