From the Pittsburgh Post-Gazette:
Four people were injured and one was in critical condition Thursday night after a fire at a Washington County gas processing plant Thursday night.
The explosion involved a condensate tank at the MarkWest Energy facility at 800 Western Ave., in Houston, Pa. It was reported at 6:03 p.m. and the fire brought under control within an hour, according to county emergency officials.
Work was being performed by a contractor, Energy Transportation LLC of Bridgeport, W.Va., according to the U.S. Occupational Safety and Health Administration which opened an investigation into the incident on Friday.
All of the injured workers suffered burns. Two were flown to UPMC Mercy, including one person who was in critical condition Friday morning, officials said. The other two injured were flown to West Penn Hospital.
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