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Industrial Hygiene in Construction | The practice of industrial hygiene in the construction industryIndustrial Hygiene in Construction. The practice of industrial hygiene in the construction industry. Fri 7 Apr 2017. OSHA Silica ENFORCEMENT Delayed 3 Months. Posted by admin under OSHA. PEL (Perm Exp Limit). Comments Off on OSHA Silica ENFORCEMENT Delayed 3 Months. Of the new silica rule has been delayed until September 23, 2107. The Federal OSHA silica rule. Is still being implemented and will take effect on June 23, 2017. OSHA says in their memorandum. Refer to the Federal OSHA Small Entity Guid.
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