HARRISBURG, Pa. — The White House said Monday that it intervened under the terms of a three-month-old national security agreement with Japan-based Nippon Steel to block a decision to stop processing ...

The U.S. Steel plant in Clairton, Pa., where an explosion killed two workers and injured 10 on Monday, has a history of maintenance issues, explosions and environmental violations. The Clairton Coke ...

One of the two people killed in the Pennsylvania steel factory explosion on Monday has been identified as a father who came from a steel mill working family. Timothy Quinn, 39, was pronounced dead at ...

Two people were killed in an explosion Monday morning at a steel factory in the Pittsburgh area. Officials said Monday night that a person who had been missing was confirmed dead. “It is with profound ...