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.
Sperry is an unincorporated community in central Des Moines County, Iowa, United States. It lies along local roads north of the city of Burlington, the county seat of Des Moines County. Its elevation is 751 feet (229 m). Although Sperry is unincorporated, it has a post office with the ZIP code of 52650, which opened on 5 February 1870. The community is part of the Burlington, IA–IL Micropolitan Statistical Area.