How does pneumoconiosis affect the body?

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  1. #hardening
  2. #often
  3. #pneumoconiosis
  4. #person
  5. #causes
  6. #dusts
  7. #affect
  8. #caused
  9. #breathing
  10. #lungs
  11. #breathe
  12. #makes
  13. #exposure
  14. #these
  15. #difficult
  16. #inflammation
  17. #mineral