A medical examiner has released the name of the second person killed in the U.S. Steel Clairton Coke Plant explosion.The Allegheny County Medical Examiner's Office has released the following information: 52-year-old Steven Menefee of Clairton died after being involved in an industrial incident at the USS Steel Works.

U.S. Steel says it believes a gas valve failure led to the explosion Monday morning at its Clairton Coke Works, in which two workers died and 10 others were injured.

Authorities confirmed a second fatality after an explosion at the U.S. Steel Clairton Coke Works facility outside of Pittsburgh.

• At least one person is dead, 10 injured and one unaccounted for in an explosion at the Clairton Coke Works in Pittsburgh, Pennsylvania. The cause of the explosion is unknown and officials are investigating, US Steel said.

Regulators are temporarily stepping up pollution monitoring in the Mon Valley after a deadly explosion at U.S. Steel’s Clairton Coke Works on Monday sparked worry about the release of toxic gases. The

The health department began deploying mobile air units Thursday provided by Pennsylvania’s Department of Environmental Protection and Carnegie Mellon University. The units will travel around Clairton to test for dozens of hazardous air pollutants.

The incident was at the U.S. Steel Clairton Coke Works plant in Clairton. One victim has been identified as Timothy Quinn, a father of three. The second individual, who was found dead on Monday night, has not yet been identified.

An explosion at the U.S. Steel Clairton Coke Works about 15 miles southeast of Pittsburgh has left one dead and at least 10 injured, with some people still trapped under the rubble as emergency worker

Authorities said their investigation has shifted to the cause of the explosion after they accounted for everyone who was missing.

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.

Allegheny County Emergency Services said a fire at the plant in Clairton started late Monday morning. Officials said they had not isolated the cause of the blast.