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References For Coal Mining

References For Coal Mining

Exposure to Respirable Coal Mine Dust. This document had the following major recommendations 1. Exposures to respirable coal mine dust should be limited to 1 mgm3 as a time-weighted average concentration for up to a 10 hour day during a 40 hour work week 2. Exposures to respirable crystalline silica should be limited to 0.05 mgm3 as

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