Rule lifecycle · DOCKET:MSHA-2023-0001
Lowering Miners' Exposure to Respirable Crystalline Silica and Improving Respiratory Protection; Delay of Effective Date of Conforming Amendments
Department of Labor, Mine Safety and Health Administration — observed across 5 documents over 985 days. Use the source documents below before deciding whether this affects your business.
In plain English
Federal mining regulators are lowering limits on silica dust workers breathe and requiring stronger respiratory masks and dust-control systems in mines. Mine operators should prepare to invest in updated equipment and controls, and plan for extra time since some related rule deadlines have been extended.
First seen
Jul 26, 2023
Last seen
Apr 6, 2026
Latest stage
Rule
PRORULE → RULE
985d
Stage timeline
Proposed·Jul 26, 2023
Lowering Miners' Exposure to Respirable Crystalline Silica and Improving Respiratory Protection
#2023-15592
Proposed·Aug 14, 2023
Lowering Miners' Exposure to Respirable Crystalline Silica and Improving Respiratory Protection
#2023-17370
Final·Jun 14, 2024
Lowering Miners' Exposure to Respirable Crystalline Silica and Improving Respiratory Protection; Correction
effective Jun 17, 2024#2024-13151
Final·Jun 24, 2024
Lowering Miners' Exposure to Respirable Crystalline Silica and Improving Respiratory Protection; Correction
effective Jun 24, 2024#2024-13510
Final·Apr 6, 2026
Lowering Miners' Exposure to Respirable Crystalline Silica and Improving Respiratory Protection; Delay of Effective Date of Conforming Amendments
#2026-06584