In the last five years, U.S. Steel has paid more than $10 million in penalties for violations of the Clean Air Act at ...

U.S. Steel said its investigation indicates the explosion happened when workers were flushing a gas valve in preparation for ...

Brian Doyle remembers the explosion that hurled him to the coke plant’s floor — but little else from that day. It was a ...

Rich Lattanzi knows all about safety in U.S. Steel’s Mon Valley facilities. At age 26, decades before he was elected in 2010 ...