Sept. 22, 2006--3M (NYSE:MMM) announced today that it will participate in the Prudential Equity Group, LLC, "Inside Our Best Ideas" Conference, Thursday, Sept 28, in Mount Snow, Vt. George W. Buckley, chairman, president and chief executive officer, will speak at 6:30 p.m. Eastern Time.

Further presentation details will be posted on 3M's Investor Relations home page at http://investor.3M.com/ shortly before the event.

About 3M - A Global, Diversified Technology Company

Every day, 3M people find new ways to make amazing things happen. Wherever they are, whatever they do, the company's customers know they can rely on 3M to help make their lives better. 3M's brands include Scotch, Post-it, Scotchgard, Thinsulate, Scotch-Brite, Filtrete, Command and Vikuiti. Serving customers in more than 200 countries around the world, the people of 3M use their expertise, technologies and global strength to lead in major markets including consumer and office; display and graphics; electronics and telecommunications; safety, security and protection services; health care; industrial and transportation. For more information, including the latest product and technology news, visit www.3M.com.

Scotch, Post-it, Scotchgard, Thinsulate, Scotch-Brite, Filtrete, Command and Vikuiti are trademarks of 3M.

3M, St. PaulInvestor Contacts:Matt Ginter, 651-733-8206orBruce Jermeland, 651-733-1807orMedia Contact:Jacqueline Berry, 651-733-3611