Rescuers were continuing to search for one missing worker at the Clairton Coke Works more than five hours after mid-morning explosions rocked the Mon Valley plant. The blasts killed one person and injured 10.

Two people were killed and 10 others were injured in an explosion at the U.S. Steel Clairton Coke Works plant on Monday.

A fatal explosion that killed two steelworkers and injured more than 10 shut down four of the 10 coke batteries at U.S. Steel's Clairton Coke Works in Pennsylvania.