U.S. Steel released preliminary findings about the potential cause of Monday's deadly explosion at U.S. Steel Clairton Coke ...

The deadly explosion at Clairton Coke Works near Pittsburgh occurred when a gas valve was flushed before planned maintenance, ...

The preliminary findings say how the company believes the explosion occurred. A union statement cautioned the investigation ...

U.S. Steel says preparations for a routine maintenance task may have led to an explosion at a U.S. Steel coal-processing ...

U.S. Steel has released new details on what investigators believe caused the explosion at the Clairton Coke Works plant.

When horrific situations strike in the Pittsburgh area, such like the U.S. Steel Clairton coke plant explosion that killed ...

If you grew up in Pittsburgh or in one of the nearby steel towns, the deadly explosion at U.S. Steel’s Clairton Coke Works ...

Preparations for a routine maintenance task may have led to an explosion at a U.S. Steel coal-processing plant near ...