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U.S. Steel has released new details on what investigators believe caused the explosion at the Clairton Coke Works plant that ...
22hon MSN
Gas valve failure during routine maintenance work may have led to fatal explosion, US Steel says
U.S. Steel says preparations for a routine maintenance task may have led to an explosion at a U.S. Steel coal-processing ...
Multiple people have been injured in Pennsylvania, and several medical helicopters have been dispatched to the area.
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