3M Co. is a technology company, which manufactures industrial, safety, and consumer products. It operates through the following segments: Safety and Industrial, Transportation and Electronics, Health Care, Consumer, and Corporate and Unallocated. The Safety and Industrial segment consists of personal safety, industrial adhesives and tapes, abrasives, closure and masking systems, electrical markets, automotive aftermarket, and roofing granules. The Transportation and Electronics segment includes electronics, automotive and aerospace, commercial solutions, advanced materials, and transportation safety. The Health Care segment offers medical and surgical supplies, skin health and infection prevention products, oral care solutions, separation and purification sciences, health information systems, inhalation and transdermal drug delivery systems, and food safety products. The Consumer segment covers consumer healthcare, home care, home improvement, and stationery and office products, such as consumer bandages, braces, supports, respirators, cleaning products, retail abrasives, picture hanging, and consumer air quality solutions. The Corporate and Unallocated segment refers to special items and other corporate expense-net. The company was founded by Henry S. Bryan, Hermon W. Cable, John Dwan, William A. McGonagle, and J. Danley Budd in 1902 and is headquartered in St. Paul, MN.