The Allegheny County Medical Examiner’s Office is identifying the second man who was killed in the explosion at the Clairton Coke Works earlier this week. Officials say 52-year-old Steven Menefee died after he was injured in the blast at the U.S. Steel property on Monday. Two of the ten other people who were injured in the explosion remain in the hospital, according to authorities. Timothy Quinn is the other worker who was killed. Multiple investigations into the cause of the blast are underway.