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 ...

Two workers died and at least 10 people were injured after multiple explosions at the U.S. Steel Clairton plant.

Workers were heating coal and preparing for routine maintenance when an explosion rocked a U.S. Steel plant outside ...

Allegheny County is increasing air quality monitoring after an explosion at a U.S. Steel plant south of Pittsburgh killed two ...

Two people are dead and 10 others injured after an explosion at U.S. Steel’s Clairton Coke Works near Pittsburgh. The ...

The explosion rocked the Clairton Coke Works, about 10 miles south of downtown Pittsburgh and one of four U.S. Steel plants ...

Allegheny County Emergency Services said a fire at the plant started around 10:51 a.m. A search and rescue effort was still active on Monday afternoon.

One worker was pulled from the wreckage hours after the explosion sent black smoke spiraling into the midday sky in the Mon ...

An explosion at a U.S. Steel plant near Pittsburgh left one dead and dozens injured or trapped under the rubble Monday, with ...

An official told CNN on Monday that some people were trapped under the rubble, and emergency crews were working to reach them ...