Sampling and evaluating respirable coal mine dust.
D003032:Coal Mining; D003201:Computers; D004391:Dust / Q000032:analysis* / Q000517:prevention & control; D004781:Environmental Exposure; D006801:Humans; D007883:Legislation, Medical; D011009:Pneumoconiosis / Q000517:prevention & control; D012822:Silicon Dioxide / Q000032:analysis; D014481:United States
D004391:Dust; D012822:Silicon Dioxide