Quality control of work environments.
D002248:Carbon Monoxide / Q000032:analysis; D002249:Carbon Monoxide Poisoning / Q000517:prevention & control; D003032:Coal Mining; D004782:Environmental Health; D005246:Feedback; D006801:Humans; D007878:Legislation as Topic; D008433:Mathematics; D008962:Models, Theoretical; D009787:Occupational Medicine; D011786:Quality Control; D014481:United States; D014691:Ventilation
D002248:Carbon Monoxide