The health of the coal miner--an expendable resource?
D003032:Coal Mining; D004391:Dust; D004781:Environmental Exposure; D006801:Humans; D007878:Legislation as Topic; D009784:Occupational Diseases; D011009:Pneumoconiosis; D013122:Spinal Diseases; D014481:United States; D014895:Weil Disease
D004391:Dust