EXHIBIT 12

                            MINNESOTA MINING AND MANUFACTURING COMPANY
                                       AND SUBSIDIARIES

                       CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES
                                    (Dollars in millions)

                                    1993      1992      1991     1990      1989
                                  ______    ______    ______   ______    ______
EARNINGS
                                                          

 Income Before Income Taxes,
  Minority Interest and           $2,002    $1,947    $1,877   $2,135    $2,099
  Cumulative Effect of
  Accounting Changes

Add:

 Interest on debt                     50        76        97       98        98

 Interest component of the ESOP
  benefit expense                     41        42        44       45       ---

 Portion of rent under operating
  leases representative of 
  the interest component              47        47        47       44        35


Less:

 Equity in undistributed income
  of 20-50% owned companies          --         (1)       (6)       1         4

             TOTAL EARNINGS AVAILABLE
             FOR FIXED CHARGES    $2,140    $2,113    $2,071   $2,321    $2,228


FIXED CHARGES

 Interest on debt                     50        76        97       98        98

 Interest component of the ESOP
  benefit expense                     41        42        44       45       ---

 Portion of rent under operating
  leases representative of
  the interest component              47        47        47       44        35

             TOTAL FIXED CHARGES  $  138   $   165   $   188  $   187   $   133

RATIO OF EARNINGS TO FIXED CHARGES 15.51     12.81     11.02    12.42     16.75