The Society for Industrial Archeology (SIA) is a North American nonprofit organization dedicated to studying and preserving historic industrial sites, structures and equipment. It was founded in 1971 in Washington, D.C., and its members are primarily from the United States and Canada, although there is some crossover with similar industrial archaeology organizations in the United Kingdom. SIA's headquarters is currently located in the Department of Social Sciences at Michigan Technological University in Houghton, Michigan. In addition to the national organization, there are thirteen regional chapters throughout the United States.