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.
Liberty Center is an unincorporated community in southern Warren County, Iowa, United States. It lies along U.S. Route 65 south of the city of Indianola, the county seat of Warren County. Its elevation is 1,024 feet (312 m), and it is located at about 41°12′16″N 93°30′0″W / 41.20444°N 93.5°W / 41.20444; -93.5 (41.2043016, -93.4999210). Although Liberty Center is unincorporated, it has a post office, with the ZIP code of 50145, which opened on 7 March 1865.