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

• Electrical Products Group (EPG) Conference in Longboat Key, Fla., on Mon., May 21, 2012; David W. Meline, senior vice president and chief financial officer, will speak at 2:00 p.m. EDT.
• Bernstein Strategic Decisions Conference in New York on Fri., June 1, 2012; Inge G. Thulin, chairman, president and chief executive officer, will speak at 10:00 a.m. EDT.
• J.P. Morgan’s 7^th Annual Diversified Industries Conference in New York on Tues., June 5, 2012; David W. Meline, senior vice president and chief financial officer, will speak at 11:15 a.m. EDT.
• Deutsche Bank Global Industrials and Basic Materials Conference in Chicago on Wed., June 13, 2012; Inge G. Thulin, chairman, president and chief executive officer, will speak at 7:45 a.m. CDT.

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

3MMedia Contact:Jacqueline Berry, 651-733-3611orInvestor Contacts:Matt Ginter, 651-733-8206orBruce Jermeland, 651-733-1807