Proposed rule · 2025-13746

Powered Air Purifying Respirators (PAPRs) in Underground Mines

MSHA is extending the comment period on the proposed rule titled, "Powered Air Purifying Respirators (PAPRs) in Underground Mines," published in the Federal Register on July 1, 2025, with an established public comment period that is scheduled to end on July 31, 2025. In response to requests for additional time to develop and submit comments on the proposed rule, MSHA is extending the comment period for an additional 30 days--from July 31, 2025, to September 2, 2025.