'Black lung' takes toll in suffering, not death.
D000368:Aged; D003032:Coal Mining; D003644:Death Certificates; D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011009:Pneumoconiosis / Q000453:epidemiology / Q000209:etiology / Q000401:mortality*; D014481:United States