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.
The proposed rule is split between two separate standards -- one for general industry and maritime, and the other for construction.
Stakeholders had been anticipating the proposed rule for months, after a lengthy White House review of the planned r
December 28, 2025