Black lung.
D003032:Coal Mining; D006264:Health Benefit Plans, Employee / Q000331:legislation & jurisprudence*; D049673:History, 20th Century; D006801:Humans; D007348:Insurance, Health / Q000331:legislation & jurisprudence*; D007883:Legislation, Medical; D011009:Pneumoconiosis / Q000266:history* / Q000517:prevention & control; D006113:United Kingdom; D014481:United States