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

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

Allegheny County is boosting air monitoring after a deadly explosion at U.S. Steel’s Clairton Coke Works, a plant with a ...

Preparations for a routine maintenance task may have led to an explosion at a U.S. Steel coal-processing plant near ...

The Chemical Safety and Hazard Investigation Board’s probe into the deadly explosion at the Clairton Coke Works could take a ...

The explosion happened when workers were flushing a gas valve in preparation for maintenance on two of the plant's coke oven ...

Here in our area, we have been known for many different industries over the centuries. Some of the earliest industries we have been noted for are agriculture, woolen products, glass, pottery, oil and ...