1. Trench or Grave.;Weitkemper;Oper. Forum,1991
2. Fatal Accident Circumstances and Epidemiology (FACE) Report: Two Maintenance Workers Die After Inhaling Hydrogen Sulfide in Manhole, January 31, 1989.;National Institute for Occupational Safety and Health;Gov. Rep. Announce. Index,1991
3. Hazards of Confined Space Entry.;Lindeke;Oper. Forum,1991
4. Confined-space Fatalities-Surveillance and Prevention.;Manwaring;Oper. Forum,1991
5. Managing a Confined Space Safety Plan.;Lindeke;Oper. Forum,1991