MARYVILLE, Tenn. — A person was apprehended Friday afternoon after authorities said they suspected him of opening gas line valves in Maryville. The Maryville Police Department said he was seen at ...

U.S. Steel on Friday pinned blame for the deadly explosion Monday at the Clairton Coke Works on a valve failure that led to coke oven gas igniting, according to the company’s preliminary findings.

PITTSBURGH — Pittsburgh is not a young city and neither is the infrastructure. Some of our gas lines are 60, 70, 80 years or older. Often, we don’t know what’s under our homes, roads and schools and ...