SEC FORM 3 SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
 
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1. Name and Address of Reporting Person*
Morrow Robert Henry

(Last) (First) (Middle)
C/O U.S. SILICA HOLDINGS, INC.
8490 PROGRESS DRIVE, SUITE 300

(Street)
FREDERICK MD 21701

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
01/31/2012
3. Issuer Name and Ticker or Trading Symbol
U.S. SILICA HOLDINGS, INC. [ SLCA ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
V P of National Accounts
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (right to buy) (1) 07/12/2021 Common Stock, par value $0.01 50,818 10.33 D
Employee Stock Option (right to buy) (1) 07/12/2021 Common Stock, par value $0.01 38,826 16.9 D
Explanation of Responses:
1. The options were granted on July 12, 2011 (the "Grant Date") and 37.5% vest on the first anniversary of the Grant Date, 12.5% vest on January 1, 2013, 25% vest on January 1, 2014 and 25% vest on January 1, 2015.
Remarks:
Exhibit 24 - Power of Attorney
/s/ Alan Jacobs by Power of Attorney 01/31/2012
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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Power of Attorney
                                POWER OF ATTORNEY

          KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned hereby
makes, constitutes and appoints each of James I. Manion, Alan Jacobs, Robert M.
Hayward, P.C. and Michele Luburich, signing singly, as the undersigned's true
and lawful attorney-in-fact, with full power and authority as hereinafter
described on behalf of and in the name, place and stead of the undersigned to:

(1)       prepare, execute, acknowledge,  deliver and file Forms 3, 4 and 5
(including any amendments  thereto) with respect to the securities of U.S.
Silica Holdings, Inc., a Delaware corporation (the "Company"),  with the
United States Securities and Exchange  Commission,  any national securities
exchanges and the Company, as considered necessary or advisable under Section
16(a) of the Securities Exchange Act of 1934 and the rules and  regulations
promulgated  thereunder,  as amended from time to time (the "Exchange Act");

(2)       seek or obtain, as the undersigned's representative and on the
undersigned's behalf,  information on transactions in the Company's  securities
from any third party, including brokers, employee benefit plan administrators
and trustees, and the  undersigned   hereby  authorizes  any  such  person  to
release  any  such information  to the  undersigned  and  approves and ratifies
any such release of information; and

(3)       perform  any  and  all  other  acts  which  in  the   discretion   of
such attorneys-in-fact   are  necessary  or  desirable  for  and  on  behalf  of
the undersigned in connection with the foregoing.

The undersigned acknowledges that:

(1)       this Power of  Attorney  authorizes,  but does not  require,  each
such attorney-in-fact  to act in their  discretion  on  information  provided
to such attorney-in-fact without independent verification of such information;

(2)       any documents prepared and/or executed by any of the  attorneys-in-
fact on behalf of the undersigned  pursuant to this Power of Attorney will be
in such form and will contain such information and disclosure as such
attorney-in-fact, in his discretion, deems necessary or desirable;

(3)       neither  the  Company  nor  any of the  attorneys-in-fact  assumes
(i) any liability for the undersigned's responsibility to comply with the
requirement of the  Exchange  Act,  (ii) any  liability of the  undersigned  for
any failure to comply with such  requirements,  or (iii) any  obligation  or
liability  of the undersigned for profit disgorgement under Section 16(b) of the
Exchange Act; and

(4)       this Power of Attorney does not relieve the undersigned from
responsibility for  compliance  with the  undersigned's  obligations  under the
Exchange  Act, including without limitation the reporting  requirements under
Section 16 of the Exchange Act.

          The undersigned hereby gives and grants each of the foregoing
attorneys-in-fact full power and authority to do and perform all and every act
and thing whatsoever requisite, necessary or appropriate to be done in and about
the foregoing matters as fully to all intents and purposes as the undersigned
might or could do if present, with full power of substitution and revocation,
hereby ratifying all that such attorney-in-fact, or such attorney-in-fact's
substitute or substitutes, of, for and on behalf of the undersigned, shall
lawfully do or cause to be done by virtue of this Power of Attorney.

          This Power of Attorney shall remain in full force and effect until
revoked by the undersigned in a signed writing delivered to each of such
attorneys-in-fact.

          IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 8 day of September 2011.

/s/ Robert H. Morrow
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      Robert H. Morrow
Name: ----------------------------------