EXHIBIT 12 MINNESOTA MINING AND MANUFACTURING COMPANY AND SUBSIDIARIES CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES (Dollars in millions) 1994 1993 1992 1991 1990 EARNINGS Income Before Income Taxes, Minority Interest and $2,154 $2,002 $1,947 $1,877 $2,135 Cumulative Effect of Accounting Changes Add: Interest on debt 87 50 76 97 98 Interest component of the ESOP benefit expense 39 41 42 44 45 Portion of rent under operating leases representative of the interest component 49 47 47 47 44 Less: Equity in undistributed income of 20-50 percent owned companies 2 -- (1) (6) 1 TOTAL EARNINGS AVAILABLE FOR FIXED CHARGES $ 2,327 $2,140 $2,113 $2,071 $2,321 FIXED CHARGES Interest on debt 87 50 76 97 98 Interest component of the ESOP benefit expense 39 41 42 44 45 Portion of rent under operating leases representative of the interest component 49 47 47 47 44 TOTAL FIXED CHARGES $ 175 $ 138 $ 165 $ 188 $ 187 RATIO OF EARNINGS TO FIXED CHARGES 13.30 15.51 12.81 11.02 12.42