A mass tort is a civil action involving numerous plaintiffs against one or a few corporate defendants. The tort may involve, for example, personal injuries suffered by numerous plaintiffs as a result of a defective product, or a mass disaster in which there were many injured persons, such as an airplane crash, or exposure of a large group of people to toxic chemicals or pharmaceuticals.
Calumet is a village in Calumet Township, Houghton County, in the U.S. state of Michigan's Upper Peninsula, that was once at the center of the mining industry of the Upper Peninsula. Also known as Red Jacket, the village includes the Calumet Downtown Historic District, listed on the National Register of Historic Places (NRHP). The village may itself be included within the Calumet Historic District, a larger area which is NRHP-listed and which is a National Historic Landmark District. The unincorporated towns of Blue Jacket and Newton border it on the northwest and south respectively. The population was 879 at the 2000 census. Calumet's nickname is Copper Town U.S.A.