The tragedy has rocked the Mon Valley, and its congresswoman wants answers. Democratic Congresswoman Summer Lee is appreciative of U.S. Steel's efforts to get to the bottom of this, but she said this can never happen again.

CLAIRTON, Pa. — Days after the deadly U.S. Steel Clairton plant explosion, people in the area are still finding ways to help. “Exhaustion — you could just see the exhaustion in their faces,” recalled Deanna Forkey, manager at Hometown Burgers and Deli, a restaurant next to the steel mill.

Officials are sharing new information following a deadly explosion at U.S. Steel’s Clairton Coke Works on Monday, revealing what happened in the moments before the blast and outlining the company’s next steps.