The deadly explosion at Clairton Coke Works near Pittsburgh occurred when a gas valve was flushed before planned maintenance, ...

The preliminary findings say how the company believes the explosion occurred. A union statement cautioned the investigation ...

If you grew up in Pittsburgh or in one of the nearby steel towns, the deadly explosion at U.S. Steel’s Clairton Coke Works ...

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

U.S. Steel says preparations for a routine maintenance task may have led to an explosion at a U.S. Steel coal-processing ...

The Trump administration won't take control of the Washington police force, but more military personnel are being deployed ...