Exhibit 24 POWER OF ATTORNEY The undersigned director of W. R. GRACE & CO. ("Company") hereby appoints BRIAN J. SMITH, RICHARD N. SUKENIK and ROBERT B. LAMM as his true and lawful attorneys-in-fact for the purpose of signing the Company's Annual Report on Form 10-K for the year ended December 31, 1994, 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/ G. C. Dacey /s/ R. C. Macauley /s/ E. W. Duffy /s/ J. E. Phipps /s/ C. H. Erhart, Jr. /s/ J. A. Puelicher /s/ J. W. Frick /s/ D. W. Robbins, Jr. /s/ J. P. Grace /s/ E. J. Sullivan /s/ G. P. Jenkins /s/ D. L. Yunich Dated: March 29, 1995 POWER OF ATTORNEY The undersigned, Acting President and Chief Executive Officer (Principal Executive Officer) and a director of W. R. GRACE & CO. ("Company"), hereby appoints BRIAN J. SMITH, RICHARD N. SUKENIK and ROBERT B. LAMM as his true and lawful attorneys-in-fact for the purpose of signing the Company's Annual Report on Form 10-K for the year ended December 31, 1994, 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/ T. A. Holmes Dated: March 29, 1995 POWER OF ATTORNEY The undersigned, Executive Vice President and Chief Financial Officer (Principal Financial Officer) of W. R. GRACE & CO. ("Company"), hereby appoints RICHARD N. SUKENIK and ROBERT B. LAMM as his true and lawful attorneys-in-fact for the purpose of signing the Company's Annual Report on Form 10-K for the year ended December 31, 1994, 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/ B. J. Smith Dated: March 29, 1995 POWER OF ATTORNEY The undersigned, Vice President and Controller (Principal Accounting Officer) of W. R. GRACE & CO. ("Company"), hereby appoints BRIAN J. SMITH and ROBERT B. LAMM as his true and lawful attorneys-in-fact for the purpose of signing the Company's Annual Report on Form 10-K for the year ended December 31, 1994, 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/ Richard N. Sukenik Dated: March 29, 1995