Explosion at US Steel plant in Pennsylvania leaves 2 dead
Digest more
Emergency responders are working to free people trapped under rubble at the Allegheny County plant, the Associated Press has reported.
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 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.
The deadly blast at the U.S. Steel facility outside Pittsburgh was just the latest in a series of recent workplace accidents.
4don MSN
US Steel Clairton Coke Works: What to know about the Pennsylvania plant where explosion injured many
An explosion at US Steel's Clairton Coke Works in Allegheny County, PA, left several injured. The plant sits along the Monongahela River near Pittsburgh.