Today we noted Internet newspaper reports of three recent fatalities at treatment plants in Pennsylvania. Nothing could present a more compelling message about the importance of safety than three such events in one state, so close together in time.On August 19, the ABC-TV network affiliate in Philadelphia reported that an employee at the Tri-Community Sewer Authority treatment plant in Robinson died after he apparently drove a riding lawn mower into a wastewater pond. The county coroner said the man, 64-year-old Joseph Sisitki of Bolivar, apparently drowned. Robinson is about 40 miles east of Pittsburgh.On July 30, the Associated Press reported
