EXHIBIT 24
POWER OF ATTORNEY
The undersigned hereby appoints HUDSON LA FORCE III, MARK A. SHELNITZ, and MICHAEL W. CONRON as his true and lawful attorneys-in-fact for the purpose of signing the Annual Report on Form 10-K of W. R. GRACE & CO. for the year ended December 31, 2010, and all amendments thereto, to be filed with the Securities and Exchange Commission. Each of such attorneys-in-fact is appointed with full power to act without the other.
| /s/ John F. Akers | |
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| John F. Akers |
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Dated: February 24, 2011 |
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POWER OF ATTORNEY
The undersigned hereby appoints HUDSON LA FORCE III, MARK A. SHELNITZ, and MICHAEL W. CONRON as his true and lawful attorneys-in-fact for the purpose of signing the Annual Report on Form 10-K of W. R. GRACE & CO. for the year ended December 31, 2010, and all amendments thereto, to be filed with the Securities and Exchange Commission. Each of such attorneys-in-fact is appointed with full power to act without the other.
| /s/ H. Furlong Baldwin | |
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| H. Furlong Baldwin |
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Dated: February 24, 2011 |
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POWER OF ATTORNEY
The undersigned hereby appoints HUDSON LA FORCE III, MARK A. SHELNITZ, and MICHAEL W. CONRON as his true and lawful attorneys-in-fact for the purpose of signing the Annual Report on Form 10-K of W. R. GRACE & CO. for the year ended December 31, 2010, and all amendments thereto, to be filed with the Securities and Exchange Commission. Each of such attorneys-in-fact is appointed with full power to act without the other.
| /s/ Ronald C. Cambre | |
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| Ronald C. Cambre |
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Dated: February 24, 2011 |
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POWER OF ATTORNEY
The undersigned hereby appoints HUDSON LA FORCE III, MARK A. SHELNITZ, and MICHAEL W. CONRON as her true and lawful attorneys-in-fact for the purpose of signing the Annual Report on Form 10-K of W. R. GRACE & CO. for the year ended December 31, 2010, and all amendments thereto, to be filed with the Securities and Exchange Commission. Each of such attorneys-in-fact is appointed with full power to act without the other.
| /s/ Marye Anne Fox | |
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| Marye Anne Fox |
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Dated: February 24, 2011 |
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POWER OF ATTORNEY
The undersigned hereby appoints HUDSON LA FORCE III, MARK A. SHELNITZ, and MICHAEL W. CONRON as his true and lawful attorneys-in-fact for the purpose of signing the Annual Report on Form 10-K of W. R. GRACE & CO. for the year ended December 31, 2010, and all amendments thereto, to be filed with the Securities and Exchange Commission. Each of such attorneys-in-fact is appointed with full power to act without the other.
| /s/ John J. Murphy | |
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| John J. Murphy |
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Dated: February 24, 2011 |
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POWER OF ATTORNEY
The undersigned hereby appoints HUDSON LA FORCE III, MARK A. SHELNITZ, and MICHAEL W. CONRON as his true and lawful attorneys-in-fact for the purpose of signing the Annual Report on Form 10-K of W. R. GRACE & CO. for the year ended December 31, 2010, and all amendments thereto, to be filed with the Securities and Exchange Commission. Each of such attorneys-in-fact is appointed with full power to act without the other.
| /s/ Christopher J. Steffen | |
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| Christopher J. Steffen |
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Dated: February 24, 2011 |
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POWER OF ATTORNEY
The undersigned hereby appoints HUDSON LA FORCE III, MARK A. SHELNITZ, and MICHAEL W. CONRON as his true and lawful attorneys-in-fact for the purpose of signing the Annual Report on Form 10-K of W. R. GRACE & CO. for the year ended December 31, 2010, and all amendments thereto, to be filed with the Securities and Exchange Commission. Each of such attorneys-in-fact is appointed with full power to act without the other.
| /s/ Mark E. Tomkins | |
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| Mark E. Tomkins |
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Dated: February 24, 2011 |
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POWER OF ATTORNEY
The undersigned hereby appoints HUDSON LA FORCE III, MARK A. SHELNITZ, and MICHAEL W. CONRON as his true and lawful attorneys-in-fact for the purpose of signing the Annual Report on Form 10-K of W. R. GRACE & CO. for the year ended December 31, 2010, and all amendments thereto, to be filed with the Securities and Exchange Commission. Each of such attorneys-in-fact is appointed with full power to act without the other.
| /s/ Thomas A. Vanderslice | |
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| Thomas A. Vanderslice |
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Dated: February 24, 2011 |
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