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.
Allison is a city in and the county seat of Butler County, Iowa, United States. The population was 1,006 at the 2000 census. Allison is home to the Butler County Fair. The city was named for U.S. Senator William Boyd Allison in 1881.