EXHIBIT 24

                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned, being a
director or officer of 3M Company, a Delaware corporation, hereby constitutes
and appoints W. James McNerney, Jr., Patrick D. Campbell, John J. Ursu, Janet L.
Yeomans and Gregg M. Larson, and each of them, his or her true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead in any and all
capacities, to sign one or more Registration Statements under the Securities Act
of 1933, as amended, on Form S-8 or such other form as such attorneys-in-fact,
or any of them, may deem necessary or desirable, any amendments thereto, and all
post-effective amendments and supplements to such registration statement, for
the registration of securities in connection with the 2002 Management Stock
Ownership Program, in such forms as they or any one of them may approve, and to
file the same with all exhibits thereto and other documents in connection
therewith with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done to
the end that such Registration Statement or Registration Statements shall comply
with the Securities Act of 1933, as amended, and the applicable Rules and
Regulations adopted or issued pursuant thereto, as fully and to all intents and
purposes as he or she might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents, or any of them or their
substitute or resubstitute, may lawfully do or cause to be done by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned have subscribed these presents this
11th day of February 2002.


/s/ W. James McNerney, Jr.                   /s/ Patrick D. Campbell
- -------------------------------------        -----------------------------------
W. James McNerney, Jr., Chairman of          Patrick D. Campbell, Senior Vice
the Board and Chief Executive Officer        President and Chief Financial
(Principal Executive Officer and             Officer (Principal Financial
Director)                                    Officer)

/s/ Linda G. Alvarado                        /s/ Ronald G. Nelson
- -------------------------------------        -----------------------------------
Linda G. Alvarado, Director                  Ronald G. Nelson, Vice President
                                             and Controller

/s/ Edward A. Brennan                        /s/ Rozanne L. Ridgway
- -------------------------------------        -----------------------------------
Edward A. Brennan, Director                  Rozanne L. Ridgway, Director

/s/ Edward M. Liddy                          /s/ Kevin W. Sharer
- -------------------------------------        -----------------------------------
Edward M. Liddy, Director                    Kevin W. Sharer, Director

/s/ Aulana L. Peters                         /s/ Louis W. Sullivan
- -------------------------------------        -----------------------------------
Aulana L. Peters, Director                   Louis W. Sullivan, Director