U.S. Steel officials have released new details about the moments leading up to an explosion at the Clairton plant that killed 2 and injured 10.

An explosion in the U.S. Steel facility in Clairton on Monday morning has left some people with critical injuries, Allegheny County officials tell Axios. The big picture: Search and rescue crews are on site in Clairton following a large explosion around 11am that sent a plume of black smoke into the air at the Clairton Coke Works.

A deadly explosion rocked the U.S. Steel Clairton Coke Works plant late Tuesday morning, leaving one worker dead, one still unaccounted for, and multiple others injured. The blast was reported at 10:51 a.