U.S. Steel released preliminary findings about the potential cause of Monday's deadly explosion at U.S. Steel Clairton Coke Works.

U.S. Steel says preparations for a routine maintenance task may have led to an explosion at a U.S. Steel coal-processing plant near Pittsburgh that left two dead, sent 10 to hospitals and damaged part of the sprawling facility.

U.S. Steel says it believes a gas valve failure led to the explosion Monday morning at its Clairton Coke Works, in which two workers died and 10 others were injured.

Family members tell Pittsburgh's Action News 4 Steven Menefee, a father of two, was a loving man who would give you the shirt off his back.

A second worker killed in Monday's explosion at U.S. Steel's Clairton Coke Works has been identified as 52-year-old Steven Menefee. The big picture: The coke oven blast tore through a portion of the plant just before 11am,

Washington Examiner senior columnist Salena Zito noted the importance of steelworkers amid the loss of two employees who died in an explosion at a US Steel plant during her appearance on the Hugh Hewitt Show.

US Steel CEO David Burritt on plant explosion: "We have suffered heartbreaking losses." The Polish beauty is a true stunner. A painful three-decades-long search can finally come to a close. He's apparently showing his "true colors."