Usually fibrosis of the lungs that develops owing to (prolonged) inhalation of inorganic or organic dusts. Cause-specific types of pneumoconiosis: (1) anthracosis From coal dust. (2) asbestosis From asbestos dust. (3) byssinosis From cotton dust. (4) siderosis From iron dust. (5) silicosis From silica dust. (6) stannosis From tin dust