Utility worker punctured pipe in Springfield blast
A utility worker responding to reports of a gas leak in western Massachusetts punctured a pipe that led to a massive explosion that injured 18 people and damaged more than 40 buildings, the state fire marshal announced Sunday. Friday night’s natural gas blast in one of New England’s largest cities was caused by ‘‘human error,’’ State Fire Marshal Stephen Coan said at a news conference. He didn’t name the Columbia Gas Co. worker who caused the explosion, which flattened a strip club, heavily damaged a day care center and scattered debris over several blocks. Some officials called it a miracle that no one was killed.