Sept. 17 (UPI) -- The pressure inside pipes blamed for a series of fires and explosions in Massachusetts last week was at least 12 times higher than it should have been, U.S. Senators said Monday.
U.S. Sens. Elizabeth Warren and Edward J. Markey, both Democrats from Massachusetts, noted the pressure in the Columbia Gas system "should have been around 0.5 pounds per square inch, but readings in the area reached at least 6 PSI," in a letter to the gas company, its parent company NiSource and the Pipeline and Hazardous Materials Safety Administration, The Boston Globe reported.