Utility worker pierced pipe before Mass. gas blast - Article Photos 2/4

A day care next door to a gas explosion that leveled a strip club Friday evening is seen in Springfield, Mass., Saturday, Nov. 24, 2012. Investigators are trying to figure out what caused the Friday evening blast that could be heard for miles, and that left a large hole in the ground where the multistory brick building housing Scores Gentleman's Club once stood. (AP Photo/Jessica Hill)