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

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

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

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

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

The US' decision to widen the scope of products subject to steel and aluminum tariffs on top of the June increase to 50 ...

"Pressure built inside the valve, leading to valve failure and coke oven gas filling the area and ultimately exploding when ...

Speaking after a high-profile summit with Russian President Vladimir Putin in Alaska, Trump told Fox News host Sean Hannity ...

In a Federal Register notice late on Friday, the Commerce Department said the Bureau of Industry and Security was adding 407 ...

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

Hurricane Erin is now a Category 5 storm as it rapidly intensified and threatens the Leeward Islands and Puerto Rico, then ...