August 31, 2013 8:02 AM | Posted by Andrew Brought
On August 23, 2013, OSHA issued
a Notice of Proposed Rulemaking
designed to reduce the permissible exposure limit (PEL) associated with silica dust exposure. OSHA is proposing a new PEL for respirable crystalline silica (quartz, cristobalite, and tridymite) of 50 μg/m3 in the general industry, construction, and shipyard sectors, a standard anywhere from two to five times more stringent than current PELs that date back to 1971.