An explosion at a U.S. Steel plant south of Pittsburgh killed two people and injured 10 others. The plant, Clairton Coke Works, is one of four major plants in Pennsylvania owned by U.S. Steel, an icon of the domestic steel industry and American industrialization for over a century.

In September 2009, a maintenance worker was killed in an explosion. 2. In July 2010, an explosion injured 14 employees and six contractors. Afterward, the Occupational Safety a

An explosion at a U.S. Steel plant that shook the ground near Pittsburgh left one dead and sent at least 10 to hospitals with emergency workers still searching the badly charred rubble hours later for