Exhibit 24.1
POWER OF ATTORNEY
KNOW ALL BY THESE PRESENTS, that I, the undersigned Director of U.S. Silica Holdings, Inc. (the “Company”), a Delaware corporation, hereby appoint Bryan A. Shinn, Chief Executive Officer of the Company, as my lawful attorney-in-fact and agent, to act on my behalf, with full power of substitution, in executing and filing the Company’s Annual Report on Form 10-K for fiscal year ended December 31, 2011, and any exhibits, amendments and other documents related thereto, with the Securities and Exchange Commission.
Whereupon, I grant unto said Bryan A. Shinn full power and authority to perform all necessary and appropriate acts in connection therewith, and hereby ratify and confirm all that said attorney-in-fact and agent, or his substitute, may lawfully do, or cause to be done, by virtue hereof.
Dated: March 20, 2012
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| | /s/ Rajeev Amara |
| | Name: Rajeev Amara Title: Director |
POWER OF ATTORNEY
KNOW ALL BY THESE PRESENTS, that I, the undersigned Director of U.S. Silica Holdings, Inc. (the “Company”), a Delaware corporation, hereby appoint Bryan A. Shinn, Chief Executive Officer of the Company, as my lawful attorney-in-fact and agent, to act on my behalf, with full power of substitution, in executing and filing the Company’s Annual Report on Form 10-K for fiscal year ended December 31, 2011, and any exhibits, amendments and other documents related thereto, with the Securities and Exchange Commission.
Whereupon, I grant unto said Bryan A. Shinn full power and authority to perform all necessary and appropriate acts in connection therewith, and hereby ratify and confirm all that said attorney-in-fact and agent, or his substitute, may lawfully do, or cause to be done, by virtue hereof.
Dated: March 20, 2012
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| | /s/ Prescott Ashe |
| | Name: Prescott Ashe Title: Director |
POWER OF ATTORNEY
KNOW ALL BY THESE PRESENTS, that I, the undersigned Director of U.S. Silica Holdings, Inc. (the “Company”), a Delaware corporation, hereby appoint Bryan A. Shinn, Chief Executive Officer of the Company, as my lawful attorney-in-fact and agent, to act on my behalf, with full power of substitution, in executing and filing the Company’s Annual Report on Form 10-K for fiscal year ended December 31, 2011, and any exhibits, amendments and other documents related thereto, with the Securities and Exchange Commission.
Whereupon, I grant unto said Bryan A. Shinn full power and authority to perform all necessary and appropriate acts in connection therewith, and hereby ratify and confirm all that said attorney-in-fact and agent, or his substitute, may lawfully do, or cause to be done, by virtue hereof.
Dated: March 20, 2012
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/s/ William J. Kacal |
| Name: William J. Kacal |
| Title: Director |
POWER OF ATTORNEY
KNOW ALL BY THESE PRESENTS, that I, the undersigned Director of U.S. Silica Holdings, Inc. (the “Company”), a Delaware corporation, hereby appoint Bryan A. Shinn, Chief Executive Officer of the Company, as my lawful attorney-in-fact and agent, to act on my behalf, with full power of substitution, in executing and filing the Company’s Annual Report on Form 10-K for fiscal year ended December 31, 2011, and any exhibits, amendments and other documents related thereto, with the Securities and Exchange Commission.
Whereupon, I grant unto said Bryan A. Shinn full power and authority to perform all necessary and appropriate acts in connection therewith, and hereby ratify and confirm all that said attorney-in-fact and agent, or his substitute, may lawfully do, or cause to be done, by virtue hereof.
Dated: March 20, 2012
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/s/ Charles M. Shaver |
| Name: Charles M. Shaver |
| Title: Director |
