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.
Richvale (also, Richland, Silbys Switch, Silsby) is a small farming community (estimated population 250) in Butte County, California, USA, south of Chico and west of Oroville. The primary crop grown in the area surrounding Richvale is rice, irrigated from the Oroville Dam on the Feather River. Several farmers in the area are known for organic farming. Richvale is located at 39° 29' 38" North, 121° 44' 41" West, 108 feet (33 m) above sea level. The ZIP Code is 95974. The community is inside area code 530.