MSHA has published the proposed silica rule on their website. Among other things, MSHA proposes to set the permissible exposure limit of respirable crystalline silica at 50 micrograms per cubic meter of air (µg/m3) for a full shift exposure, calculated as an 8-hour time-weighted average for all miners.

According to Bloomberg Law, Assistant Secretary of Labor for MSHA, Chris Williamson, has stated that beginning this month the agency will resume a practice that ended in 2020 – publicizing the names of mines targeted for impact inspections. Every month, MSHA conducts targeted inspections at mines that according to the agency merit increased attention due to their compliance history or “certain compliance concerns.” Past monthly targeted inspection results are published on the MSHA website.

MSHA has announced a new enforcement initiative regarding overexposure to respirable crystalline silica.

The silica enforcement initiative is intended “to take immediate action to reduce the risks the silica exposure.” The initiative will include:

  • Spot inspections at coal and metal nonmetal mines with a history of repeated silica overexposures to closely monitor and evaluate health

Partner Brian Hendrix has published an article for Rock Products explaining MSHA’s focus on Power Haulage Safety. Brian examines the best practices provided by MSHA and offers advice to quarry operators looking to develop and implement a mine-specific plan for powered haulage safety.

For more information, read the article here.