The preliminary findings say how the company believes the explosion occurred. A union statement cautioned the investigation is in its early stages.

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

CLAIRTON, Pa. (AP) — Investigators are working to determine the cause of an explosion that rocked a steel plant outside ...

The deadly blast at the U.S. Steel facility outside Pittsburgh was just the latest in a series of recent workplace accidents.

The explosion, followed by several smaller blasts, could be felt in the nearby community and prompted county officials to ...

U.S. Steel Clairton Coke Works' current limited coke-making capacity due to Monday's explosion is prompting concerns.

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

U.S. Steel has released new details on what investigators believe caused the explosion at the Clairton Coke Works plant that ...

Channel 11 spoke exclusively with United Steelworkers Local 1557 Vice President Richard Tikey, sharing his reaction to new ...

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

HARRISBURG, Pa. (AP) — The fatal explosion last week at U.S. Steel’s Pittsburgh-area coal-processing plant has revived debate ...

KDKA's Megan Shinn takes a look back at the news of the week, including the explosion at the U.S. Steel Clairton plant, the ...