Occupational Exposure to Crystalline Silica (February 2016): Under the proposal, workers’ exposures would be limited to a new permissible exposure limit (PEL) of 50 micrograms of respirable crystalline silica per cubic meter of air (µg/m3). The current PEL is 100 µg/m3 for general industry.

Proposal – proposta

Permissible – permitida

Current - atual