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

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

The mill, which is part of the recent merger between U.S. Steel and Nippon Steel, has faced scrutiny from federal and local ...

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

• At least one person is dead, 10 injured and one unaccounted for in an explosion at the Clairton Coke Works in Pittsburgh, ...

A devoted dad has been identified as one of the two steel workers killed from an explosion at a Pennsylvania steel plant on ...

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

Timothy Quinn, 39, of East Huntingdon Township, also died in the incident. Ten other people were injured. Three of them are ...

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

"God is working through her. She's definitely a light within our neighborhood right now, for sure," Finch said. "It gets ...

Five people were killed and at least 20 were injured in the blast that sparked a huge fire at the Elastik gunpowder plant just over 100 miles southeast of Moscow.

"In science fiction, there are scenes where a beam is fired at something to destroy it, causing an explosion with debris ...