EXHIBIT 99.2

               STATEMENT UNDER OATH OF PRINCIPAL FINANCIAL OFFICER
       REGARDING FACTS AND CIRCUMSTANCES RELATING TO EXCHANGE ACT FILINGS

I, Patrick D. Campbell, state and attest that:

         (1) To the best of my knowledge, based upon a review of the covered
         reports of 3M Company, and, except as corrected or supplemented in a
         subsequent covered report:

         o        no covered report contained an untrue statement of a material
                  fact as of the end of the period covered by such report (or in
                  the case of a report on Form 8-K or definitive proxy
                  materials, as of the date on which it was filed); and

         o        no covered report omitted to state a material fact necessary
                  to make the statements in the covered report, in light of the
                  circumstances under which they were made, not misleading as of
                  the end of the period covered by such report (or in the case
                  of a report on Form 8-K or definitive proxy materials, as of
                  the date on which it was filed).

         (2) I have reviewed the contents of this statement with the Company's
         audit committee.

         (3) In this statement under oath, each of the following, if filed on or
         before the date of this statement, is a "covered report":

         o        the Annual Report on Form 10-K filed with the Commission for
                  the year ended December 31, 2001 of 3M Company;

         o        all reports on Form 10-Q, all reports on Form 8-K and all
                  definitive proxy materials of 3M Company filed with the
                  Commission subsequent to the filing of the Form 10-K
                  identified above; and

         o        any amendments to any of the foregoing.

      /s/ Patrick D. Campbell                    Subscribed and sworn to
      -----------------------------              before me this 12th day of
      Patrick D. Campbell                        August, 2002.
      August 12, 2002
                                                 /s/ Kathleen M. Cramer
                                                 ----------------------
                                                 Kathleen M. Cramer
                                                 Notary Public
                                                 My Commission Expires: 1/31/05