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new osha pel for silica

OSHAs New Silica Standard Respirable Silica Rules NEW OSHA RESPIRABLE CRYSTALLINE SILICA RULING FOR CONSTRUCTION OSHA has updated the permissible exposure limit PEL of Respirable Crystalline Silica RCS effective September 23 rd new PEL limits exposure to 50 micrograms of RCS per cubic meter of air during an 8hour work shift

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