This is the back of the safety helmet worn by a steelworker listening to Pennsylvania Governor Josh Shapiro's meeting with ...

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

The explosion at U.S. Steel's Pittsburgh-area plant has reignited debate about its future. The plant, part of a long-standing ...

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

Workers returned​ to U.S. Steel Clairton Coke Works on Tuesday morning, one day after an explosion killed two people.

Authorities said their investigation has shifted to the cause of the explosion after they accounted for everyone who was missing.

Authorities confirmed a second fatality after an explosion at the U.S. Steel Clairton Coke Works facility outside of Pittsburgh.

The plant, a massive industrial facility along the Monongahela River south of Pittsburgh, is considered the largest coking ...

An explosion Monday at a U.S. Steel coking plant near Pittsburgh has left people trapped under the rubble, with emergency workers on site trying to rescue them, an official said.