Sources: Occupational Safety and Health Administration; National Concrete Masonry Association, Herndon, Va.; National Ready Mixed Concrete Association, Silver Spring, Md.
OSHA is accepting comments on its Notice of Proposed Rulemaking on Occupational Exposure to Respirable Crystalline Silica through February 11—two weeks beyond a prior deadline for stakeholders in concrete, construction and other industry sectors to weigh in on a universal permissible exposure limit (PEL) for silica dust or powder.
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