3M Amends Zero Coupon Senior Convertible Notes Due 2032; Will Add Cash Interest Payments Through November 2007

This cash interest, at the rate of 2.40 percent per annum of theprincipal amount at maturity ($1,000) of the Notes, is the equivalentof 2.75 percent per annum of $873.86, the Notes' accreted value onNov. 21, 2005. These payments will be made semi-annually in arrears onMay 22, 2006, Nov. 22, 2006, May 22, 2007 and Nov. 22, 2007, toholders of record on the 15th calendar day next preceding each suchinterest payment date. The specific terms of the payments are setforth in a supplemental indenture, which will be filed with theSecurities and Exchange Commission on Form 8-K. The Form 8-K also willinclude a summary of certain U.S. federal income tax consequences ofthe amendment to the terms of the Notes.

Holders of the Notes have the right to require 3M to purchase theNotes at their accreted value on Nov. 21, 2005, and each Nov. 21 of2007, 2012, 2017, 2022 and 2027. Holders who validly submit a purchasenotice by Nov. 18, 2005, and do not withdraw that notice in accordancewith The Depository Trust Company's procedures by Nov. 21, 2005, willreceive the Purchase Price of $873.86 per $1,000 Principal Amount atMaturity of Notes redeemed, in cash, on Nov. 22, 2005.

Holders should discuss with their tax advisors the taximplications of 3M's amendment to the terms of the Notes.

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