title: The nature of coal miner's lung.
mesh_terms: D003032:Coal Mining; D006801:Humans; D007883:Legislation, Medical; D008854:Microscopy, Electron; D011009:Pneumoconiosis / Q000175:diagnosis / Q000473:pathology; D012129:Respiratory Function Tests; D012907:Smoking / Q000150:complications; D014481:United States