Hours before a deadly explosion ripped through a Pennsylvania nursing home last month, staff grew concerned about the smell of natural gas on several floors and brought in workers from the local utility company to check it out, federal regulators said Wednesday.
The preliminary report by the National Transportation Safety Board provides details about the three hours that passed between the report of a gas odor and the thunderous blast in Bristol, just outside Philadelphia, as well as how utility workers were on the scene for much of that time. It also notes that a utility worker traced the leak to a valve in a meter set in the basement boiler room.
