title: Securing confined spaces.
authors.forename: L F
authors.initials: LF
authors.lastname: Johnson
mesh_terms: D020378:Confined Spaces; D015386:Hazardous Substances; D006801:Humans; D007318:Inservice Training / Q000379:methods*; D017751:Safety Management / Q000379:methods*; D012637:Security Measures; D014481:United States
chemical_list: D015386:Hazardous Substances