Silica

Industry sources say OSHA's newly released proposed rule to reduce worker exposures to crystalline silica, given its breadth across business sectors and the reach of the standard, could represent the biggest OSHA proposed regulation in terms of impact on business since the agency's abortive effort to regulate ergonomic hazards in the late 1990s.

OSHA released its long-awaited proposed rule tackling crystalline silica exposures on Friday (Aug. 23), rolling out a comprehensive regulation that if eventually adopted would cut the permissible exposure limit to 50 micrograms of respirable crystalline silica per cubic meter and take broad measures to limit worker exposures across industries.