Exhibit 23

 

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

 

We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated February 11, 2008, except with respect to our opinion on the consolidated financial statements insofar as it relates to the effects of the changes in the segments and geographic areas discussed in Notes 16 and 17 as to which the date is May 19, 2008, relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in 3M Company’s Current Report on Form 8-K dated May 19, 2008.

 

/s/ PricewaterhouseCoopers LLP

 

PricewaterhouseCoopers LLP

Minneapolis, MN

 

January 8, 2009