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

An investigation is underway to determine what caused a massive blast at the U.S. Steel plant in Clairton, Pennsylvania, that ...

The explosion took place at the US Steel Clairton Coke Works plant, located south of Pittsburgh, Pennsylvania.

An explosion at a U.S. Steel plant south of Pittsburgh has killed two people and injured 10 others. One worker was rescued ...

An explosion Monday at a U.S. Steel plant near Pittsburgh has left dozens wounded and people trapped under the rubble, with ...

Multiple people have been injured in Pennsylvania, and several medical helicopters have been dispatched to the area.

At least one person has died, and one person remains unaccounted for, while at least 10 people have been injured following ...

An explosion rocked the U.S. Steel Clairton Coke Works facility near Pittsburgh Monday, leaving people trapped beneath the ...

Multiple explosions on Monday at a U.S. Steel plant near Pittsburgh killed two people and injured 10 others, according to the ...

A timelapse from the Breathe Project captured an explosion at the U.S. Steel Clairton Coke Works plant in Pennsylvania.

An explosion at a U.S. Steel plant near Pittsburgh left two dead and sent at least 10 to hospitals Monday and heavily damaged the sprawling facility, officials said.

Emergency crews responded to an explosion at the Clairton Coke Works, a U.S. Steel plant near Pittsburgh, Pennsylvania.