An explosion at a U.S. Steel coking plant near Pittsburgh has left people trapped under the rubble. Here's what we know.

One person has died and dozens are reportedly injured or trapped under rubble following an explosion at a U.S. Steel plant ...

One person has died, one person is unaccounted for and at least 10 are injured following an explosion at a U.S. Steel plant ...

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

The Allegheny County Emergency Services said a fire at the plant started around 10:51 a.m. and that it has transported five ...

There are no confirmed fatalities at the Clairton Coke Works, said Abigail Gardner, director of communications for Allegheny ...

People are reportedly trapped under rubble at a U.S. Steel plant outside of Pittsburgh after an explosion Monday that drew ...

An explosion at a U.S. Steel plant near Pittsburgh has left dozens injured or trapped under the rubble, with emergency workers on site trying to rescue them.

Video shows a huge plume of black smoke above the U.S. Steel Clairton plant after deadly explosions on Monday.

One person has died and two are believed to be missing in the explosion at a U.S. Steel plant, an official says.

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