Three sanitation workers and one policeman died in an underground sewage pumping station. Two sanitation workers had entered the room 50 feet underground and attempted to unbolt an inspection plate from a valve. The plate blew off and the underground room filled with raw sewage. Neither worker was wearing a respirator or other protective gear. One was overcome by sewer gas and the other exited the chamber to call the police for help. He entered the underground chamber again and was also overcome. Then a police officer entered the chamber, followed by a sanitation worker supervisor. None returned to the surface. Next into […]