The second person killed in a deadly explosion at the U.S. Steel Clairton Coke Works has now been identified. Steven Menefee, 52, of East Huntingdon Township, was pronounced dead at the scene, according to the Allegheny County Medical Examiner’s Office.

A devoted dad has been identified as one of the two steel workers killed from an explosion at a Pennsylvania steel plant on Monday, officials said.

The Pennsylvania county where an explosion at a U.S. Steel plant south of Pittsburgh killed two people and injured more than 10 others announced Thursday that it is stepping up air quality monitoring in the area of the sprawling facility that has a troubled environmental record.