Is black lung disease curable?

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  1. #black
  2. #disease
  3. #improving
  4. #symptoms
  5. #extended
  6. #there
  7. #usually
  8. #pneumoconiosis
  9. #commonly
  10. #affects
  11. #inhaled
  12. #quality
  13. #relieving
  14. #treatment
  15. #focuses
  16. #worker
  17. #occupational
  18. #miners
  19. #period