3M (NYSE: MMM) today announced dates for the following investor events:

First-Quarter Earnings Conference Call

3M will announce its first-quarter 2012 earnings on a conference call Tues., April 24, 2012, at 8:00 a.m. CDT. The live webcast, press release and supporting slide presentation will be available on 3M’s Investor Relations website at http://investor.3M.com. The earnings call may also be accessed at (800) 762-2596 within the U.S. or +1 (212) 231-2916 outside the U.S. Please join the call at least 10 minutes before the start time of 8:00 a.m. CDT.

A replay will be available shortly after the conclusion of the call via both an online webcast and by telephone. You may access the webcast by visiting the Investor Relations website and clicking on “Quarterly Earnings.” The telephone replay will be available until 10:00 a.m. CDT on April 29, 2012, and may be accessed by calling (800) 633-8284 (access code 21538620).

Investor Conferences

• 3M will participate in the Electrical Products Group (EPG) Conference in Longboat Key, Fla., on Mon., May 21. David Meline, senior vice president and chief financial officer, will speak at 2:00 p.m. EDT.
• 3M will also participate in the Bernstein Strategic Decisions Conference in New York on Fri., June 1. Inge Thulin, president and chief executive officer, will speak at 10:00 a.m. EDT.

Further details will be posted on 3M’s Investor Relations website at http://investor.3M.com shortly before each event.

About 3M
3M captures the spark of new ideas and transforms them into thousands of ingenious products. Our culture of creative collaboration inspires a never-ending stream of powerful technologies that make life better. 3M is the innovation company that never stops inventing. With $30 billion in sales, 3M employs 84,000 people worldwide and has operations in more than 65 countries. For more information, visit www.3M.com or follow @3MNews on Twitter.

3MInvestor Contacts:Matt Ginter651-733-8206orBruce Jermeland651-733-1807orMedia Contact:Jacqueline Berry651-733-3611