3M today announced that it will webcast its second-quarter 2004 earnings conference call Monday, July 19, 2004, at 8 a.m. CT.

Investors can access the webcast on the Internet at http://investor.3M.com. A replay will be available at http://investor.3M.com, for one week following the call.

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 icons such as Scotch, Post-it, Scotchgard, Thinsulate, Scotch-Brite, Filtrete, Command and Vikuiti. Serving customers in more than 200 countries around the world, the company's 67,000 people 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. PaulMedia Contact:John Cornwell, 651-733-7698orInvestor Contacts:Mark Colin, 651-733-8206orBruce Jermeland, 651-733-1807