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

The U.S. Steel plant in Clairton, Pa., where an explosion killed two workers and injured 10 on Monday, has a history of ...

Two people are dead and 10 others injured after an explosion at U.S. Steel’s Clairton Coke Works near Pittsburgh. The ...

U.S. Steel's Clairton Coke Works — long flagged for safety and environmental concerns — is under fresh scrutiny after an ...

After an explosion rocked a steel plant outside Pittsburgh, workers scrambled into the wreckage alongside firefighters. A ...

The explosion, followed by several smaller blasts, could be felt in the nearby community and prompted county officials to ...

An explosion rocked a steel plant outside Pittsburgh on Monday, leaving two dead and 10 others injured, including a person ...

Moments after an explosion erupted at a U.S. Steel plant in Pennsylvania, company firefighters, local responders and ...

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