EXHIBIT 15
Securities and Exchange Commission
100 F Street, N.E.
Washington, DC 20549
Commissioners:
We are aware that our report dated May 3, 2016 on our review of interim financial information of 3M Company and its subsidiaries for the three month periods ended March 31, 2016 and 2015 and included in the Companys quarterly report on Form 10-Q for the quarter ended March 31, 2016 is incorporated by reference in its Registration Statement on Form S-8 dated May 18, 2016.
Very truly yours,
/s/ PricewaterhouseCoopers LLP
PricewaterhouseCoopers LLP
Minneapolis, Minnesota
May 18, 2016