Ten people were hospitalized after the blast at a coke plant in Clairton, Pa., near Pittsburgh. One person who had been missing was found dead late on Monday.

The explosion, followed by several smaller blasts, could be felt in the nearby community and prompted county officials to warn residents to stay away from the scene so emergency workers could respond.

An explosion at a U.S. Steel plant near Pittsburgh left one person dead and sent at least 10 to hospitals Monday and heavily damaged the sprawling facilty, with emergency workers still searching the badly charred rubble for a missing worker,

In Pennsylvania, the blast at a steel plant has killed two people. Officials say they are still investigating the cause. One worker describes what he saw and heard during the moment of the explosion.

The chief of the Allegheny County Emergency Management recounted for reporters the conditions inside the Clairton Coke Works plant following Monday's explosion.