. - Aldan Borough, Delaware County, Pennsylvania - - Deaths of Two Sewer Workers - - Thursday, 11 July 2019 - Deceased: Daniel Cleaver & Matthew DiSands, 20 Autopsy Possibilities: Cause of Death :: Asphyxiation Manner of Death :: Accidental Mechanism of Death :: Hypoxia 1B)) CBS TV-3: 2 Sewer Workers Die After Passing Out In Manhole In Delaware County 2)) "What Makes Manholes So Lethal?" What Makes Manholes So Lethal?* 3)) Google™ Supplements & Updates: causes of sewer worker deaths - Google Search *4)) Some Types of Sewer Gases: Methane Carbon Monoxide Hydrogen Sulfide DA = District Attorney Hypoxia = Reduced Oxygen to the Brain ME = Medical Examiner NIOSH = National Institute Of Safety & Health OSHA = Occupational Safety & Health Administration TOX = Toxicology Tests Our Support To All. [Contribution # 6612 Message # 458752] .