Triumph Pork is facing another wrongful death lawsuit. The mother of a worker killed in an explosion on Oct. 12 at the pork processing plant in St. Joseph, Mo., filed the lawsuit against the plant’s owner and five other companies.

Andrew Bauer’s mother, Melinda Fisher of Kansas City, claims she suffered emotional and financial losses. She is seeking unspecified actual and punitive damages.

The state fire marshal found that gas leaking from an open valve fueled the explosion, which left 14 others injured. Eleven of those workers filed a separate lawsuit earlier this month.

The fire marshal’s report lists halogen lighting, fans in the ductwork of the heating system and a striker and torch found in the hallway of the kitchen as possible ignition sources.

Besides Triumph Foods, the lawsuit also names the construction management firm A. Epstein and Sons International, of Chicago; Southern Union, which is the parent company of Missouri Gas Energy; plumbing contractor IHP Industrial, of St. Joseph; and contractors Superior Air Handling, of Clearfield, Utah, and Dragoo Metal Works, of St. Joseph.

Kansas City Star, Associated Press