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

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

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

The Pennsylvania county where an explosion at a U.S. Steel plant south of Pittsburgh killed two people and injured more than ...

Two workers were killed and nearly a dozen were injured while they were preparing for a maintenance project at the Clairton facility.

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

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

Clairton, Pennsylvania was rocked Tuesday by an explosion at the U.S. Steel Clairton Coke Works. Clairton Mayor Richard ...