Black lungs.
D003032:Coal Mining / Q000009:adverse effects*; D003937:Diagnosis, Differential; D004391:Dust; D004781:Environmental Exposure; D006801:Humans; D011009:Pneumoconiosis / Q000175:diagnosis* / Q000453:epidemiology / Q000473:pathology; D012907:Smoking / Q000150:complications
D004391:Dust