Explosions at the U.S. Steel facility in Clairton on Monday morning killed at least one person and injured 10.

The big picture: Search and rescue crews were sent to Clairton after large explosions around 11am that sent a plume of black smoke into the air at Clairton Coke Works. • One person was killed, said Allegheny County EMS chief Matthew Brown at a Monday afternoon press conference. • Crews are searching for one person who is unaccounted for as of 4pm Monday, and they plan to search until that person is found, said Brown. • Ten people were injured and taken to local hospitals. No details were provided on the extent of injuries.

Emergency teams were dispatched immediately to the plant after explosions at coke oven batteries 13 and 14, said U.S. Steel CEO David Burritt in a state

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