New data on the relationship between simple pneumoconiosis and exposure to coal mine dust.
D003032:Coal Mining; D004391:Dust / Q000032:analysis*; D006801:Humans; D011009:Pneumoconiosis / Q000175:diagnosis*; D011791:Quartz / Q000032:analysis; D013997:Time Factors
D004391:Dust; D011791:Quartz