Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, That the undersigned directors and the Principal Financial and Accounting Officer of MINNESOTA MINING AND MANUFACTURING COMPANY, a Delaware corporation, hereby constitute and appoint Livio D. DeSimone, Giulio Agostini, John J. Ursu, Roger P. Smith, Janet L. Yeomans and Gregg M. Larson, or any of them, their true and lawful attorneys-in-fact and agents, and each of them with full power to act without the others, for them and in their name, place, and stead, in any and all capacities, to do any and all acts and things and execute any and all instruments which said attorneys and agents may deem necessary or desirable to enable MINNESOTA MINING AND MANUFACTURING COMPANY to comply with the Securities Exchange Act of 1933, as amended, and any rules, regulations, and requirements of the Securities and Exchange Commission in respect thereof, in connection with the registration under said Act of not to exceed 15,000,000 shares of common stock, with a par value of $0.50 per share, of this Corporation which may be offered for sale under the 1997 General Employees Stock Purchase Plan including specifically, but without limiting the generality of the foregoing, power and authority to sign the name of MINNESOTA MINING AND MANUFACTURING COMPANY, and the names of the undersigned directors and Principal Financial and Accounting Officer to the registration statement and to any instruments and documents filed as part of or in connection with said registration statement or amendments thereto; and the undersigned hereby ratify and confirm all that said attorneys and agents shall do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned have subscribed these presents this 10th day of February, 1997. SIGNATURE TITLE DATE /s/ Livio D. DeSimone Chairman Of The Board; July 2, 1997 Livio D. DeSimone Chief Executive Officer, Director /s/ Giulio Agostini Senior Vice President, July 2, 1997 Giulio Agostini Finance /s/ Ronald O. Baukol Director July 2, 1997 Ronald O. Baukol /s/ Edward A. Brennan Director July 2, 1997 Edward A. Brennan /s/ Allen F. Jacobson Director July 2, 1997 Allen F. Jacobson /s/ W. George Meredith Director July 2, 1997 W. George Meredith /s/ Ronald A. Mitsch Director July 2, 1997 Ronald A. Mitsch /s/Allen E. Murray Director July 2, 1997 Allen E. Murray /s/ Aulana L. Peters Director July 2, 1997 Aulana L. Peters /s/ Rozanne L. Ridgway Director July 2, 1997 Rozanne L. Ridgway /s/ Frank Shrontz Director July 2, 1997 Frank Shrontz /s/ F. Alan Smith Director July 2, 1997 F. Alan Smith /s/ Louis W. Sullivan Director July 2, 1997 Louis W. Sullivan