At least one person has died, one person remains unaccounted for, and at least 10 people have been injured following multiple explosions at the U.S. Steel Clairton plant on Monday.First responders were alerted to the incident just before 11 a.

Explosions at a U.S. Steel plant in Clairton shook the ground, left one dead and sent at least 10 to hospitals on Monday.

An explosion occurred Monday at a steel factory in Clairton, Pennsylvania, authorities said. A spokesperson for Allegheny County said a rescue operation was underway at U.S. Steel Clairton Coke Works for people trapped under the rubble.