silica - identifying and managing crystalline silica dust ...
Apr 08, 2015 Pending Silica Legislation OSHA has spent the past several years working to lower the permissible exposure limit of silica dust. The proposed rule would limit respirable crystalline silica exposure to 0.05 mg/m 3 TWA ― a 50% reduction from the current 0.1 mg/m 3 TWA limit.. By lowering the PEL, OSHA is more closely following other health and safety …
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