The disposal of coal and haematite dusts inhaled successively.
D003031:Coal; D004391:Dust; D006801:Humans; D011009:Pneumoconiosis; D012143:Respiratory Physiological Phenomena; D012137:Respiratory System / Q000502:physiology*
D003031:Coal; D004391:Dust
DUST; PNEUMOCONIOSES/experimental; RESPIRATORY TRACT/physiology