title: The validity of gravimetric measurements of respirable coal mine dust.
mesh_terms: D000397:Air Pollution / Q000032:analysis*; D003031:Coal / Q000032:analysis*; D003032:Coal Mining; D004391:Dust / Q000032:analysis*; D004781:Environmental Exposure; D005374:Filtration / Q000295:instrumentation; D006801:Humans; D008722:Methods; D009787:Occupational Medicine; D012822:Silicon Dioxide / Q000032:analysis; D013046:Specific Gravity
chemical_list: D003031:Coal; D004391:Dust; D012822:Silicon Dioxide