<DOCUMENT>
<TYPE>EX-12
<SEQUENCE>3
<FILENAME>q20310qex12.txt
<DESCRIPTION>EXHIBIT 12
<TEXT>

<PAGE> 38
<TABLE>
                                                            EXHIBIT 12

                         3M Company and Subsidiaries
            CALCULATION OF THE RATIO OF EARNINGS TO FIXED CHARGES
                                 (Unaudited)
<CAPTION>
                         Six Months
                            Ended
                           Jun. 30,  Year    Year    Year    Year    Year
(Dollars in millions)        2003    2002    2001    2000    1999    1998
<S>                         <C>     <C>     <C>     <C>     <C>     <C>
EARNINGS
Income from continuing
  operations before
  income taxes, minority
  interest, extraordinary
  loss and cumulative effect
  of accounting change*     $1,705  $3,005  $2,186  $2,974  $2,880  $1,952
Add:
Interest expense                56     100     143     127     125     139
Interest component of the
  ESOP benefit expense           7      16      18      19      21      29
Portion of rent under
  operating leases
  representative of the
  interest component            21      40      39      39      37      41
Less: Equity in undistributed
  income of 20-50% owned
  companies                      5      10       5      10       4       4

TOTAL EARNINGS AVAILABLE
  FOR FIXED CHARGES         $1,784  $3,151  $2,381  $3,149  $3,059  $2,157

FIXED CHARGES
Interest on debt                52     100     150     141     135     139
Interest component of the
  ESOP benefit expense           7      16      18      19      21      29
Portion of rent under
  operating leases
  representative of the
  interest component            21      40      39      39      37      41

TOTAL FIXED CHARGES         $   80  $  156  $  207  $  199  $  193  $  209

RATIO OF EARNINGS TO
  FIXED CHARGES               22.3    20.2    11.5    15.8    15.8    10.3

<FN>
<F1>
*Six months ended June 30, 2003 includes a $93 million pre-tax loss related
to an adverse ruling associated with a lawsuit filed by LePage's Inc.
Year 2002 and year 2001 special items include net pre-tax losses of
$202 million and $504 million, respectively, primarily related to the
restructuring; 2000 includes net pre-tax losses of $23 million related to
special items; 1999 includes net pre-tax gains of $100 million relating to
special items that include gains on divestitures, litigation expense, an
investment valuation adjustment, and a change in estimate that reduced
1998 restructuring charges; 1998 includes pre-tax restructuring charges
of $493 million.
</FN>
</TABLE>



</TEXT>
</DOCUMENT>
