title: Entering unforgiving territory.
authors: Industrial Scientific Corp, USA. clange@indsci.com
authors: Chris
authors: C
authors: Lange
mesh_terms: D000062:Accidents, Occupational / Q000517:prevention & control*; D001237:Asphyxia / Q000401:mortality; D020378:Confined Spaces; D006801:Humans; D007318:Inservice Training / Q000458:organization & administration*; D009314:National Institute for Occupational Safety and Health, U.S.; D016272:Occupational Health; D018635:Rescue Work; D014481:United States