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.
Columbiana is a city in Columbiana and Mahoning Counties in the U.S. state of Ohio. The population was 5,635 at the 2000 census. The Columbiana County portion of Columbiana is part of the East Liverpool–Salem Micropolitan Statistical Area, while the Mahoning County portion is part of the Youngstown–Warren–Boardman, OH-PA Metropolitan Statistical Area.