title: Study options on respiratory protection before permitting confined space entry.
authors.forename: B
authors.initials: B
authors.lastname: Matranga
authors.forename: S
authors.initials: S
authors.lastname: Weinstein
mesh_terms: D000062:Accidents, Occupational / Q000517:prevention & control*; D004784:Environmental Monitoring / Q000331:legislation & jurisprudence*; D015386:Hazardous Substances / Q000009:adverse effects* / Q000032:analysis; D006801:Humans; D009314:National Institute for Occupational Safety and Health, U.S. / Q000592:standards*; D012134:Respiratory Protective Devices / Q000592:standards / Q000639:trends; D014481:United States
chemical_list: D015386:Hazardous Substances