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.
Keystone Heights is a city in Clay County, Florida, United States. The population was 1,349 at the 2000 census. As of 2004, the population recorded by the U.S. Census Bureau is 1,392 . Named after the state of Pennsylvania, the "Keystone State".