Add Yahoo as a preferred source to see more of our stories on Google. A general view of the exterior of the U.S. Steel Clairton Coke Plant, on March 20, 2024, in Clairton, Pennsylvania. (Jeff Swensen ...
Updated: October 7, 2025 at 1:05 PM EDT This story has been corrected to show that maintenance was being performed on a gas isolation valve. The federal board investigating the fatal August explosion ...
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