title: Respirable dust levels - surface work areas of underground coal mines and surface coal mines.
mesh_terms: D000397:Air Pollution / Q000032:analysis; D003032:Coal Mining; D004391:Dust / Q000032:analysis*; D004781:Environmental Exposure; D006801:Humans; D007883:Legislation, Medical; D008452:Maximum Allowable Concentration; D009787:Occupational Medicine / Q000295:instrumentation; D009790:Occupations; D013997:Time Factors; D014481:United States
chemical_list: D004391:Dust