The body was discovered after a search operation which stretched into the evening at the US Steel Clairton site outside Pittsburgh. Local police earlier confirmed that one other person had died and 10 others were injured in a large explosion which destroyed part of the plant.

“It is with profound sadness that I share with you that the U. S. Steel colleague who had been unaccounted for has been located and confirmed deceased, following an extensive search and rescue effort," David Burritt, the company's CEO, said in a statement. At least 10 people were injured in the blast, officials said.