An explosion at US Steel's Clairton Works plant has injured at least 13 employees. Ambulances were called to the plant at 9:45 on Wednesday morning. Three workers were taken to the burn unit, and a hospital spokesman says that one is in critical condition. A workers says that all of the ovens used for making coke were shut down after the explosion, and it is unknown what caused the explosion. US Steel has committed $1 billion to improving the environment at the plant after being fined in 2006. One contractor was killed in 2009. The plant has around 1,000 employees.
See Tom Fontaine and Luis Fabregas, Pittsburgh Tribune-Review, July 13, 2010