Two classes of respiratory disease arecaused by mineral dustsFibrogenic diseases(emphysema-like)silicosis–quartzblack lung–coal dustasbestosis–asbestos mineralsMalignant neoplasms–lung cancer–asbestos &quartz(?)mesothieloma–crocidoliteasbestos & erionite (a fibrouszeolite)Much exposure occurs inthe workplace
Construction of the Hawk’s NestTunnel near Gauley Bridge, WVcaused one of the worst industrialdisasters in US history
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