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.
Beaver is a borough in and the county seat of Beaver County, Pennsylvania, United States, at the confluence of the Beaver and Ohio Rivers. As of the 2000 census, the borough population was 4,775, having dropped from 5,641 in 1940. Robert Linn was the mayor of Beaver for 58 years (1946–2004), making him the longest serving mayor in the United States. The borough was the home of influential U. S. Senator "Boss" Quay.