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.
Youngstown is a borough in Westmoreland County, Pennsylvania, United States. Youngstown was incorporated on 2 April 1831. The population was 400 at the 2000 census.