Data / Federal rules / 2024-06920
Lowering Miners' Exposure to Respirable Crystalline Silica and Improving Respiratory Protection
The Mine Safety and Health Administration published this final rule in the Federal Register on April 18, 2024. It took effect on June 17, 2024.
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What the agency says
The Mine Safety and Health Administration (MSHA) is amending its existing standards to better protect miners against occupational exposure to respirable crystalline silica, a significant health hazard, and to improve respiratory protection for miners from exposure to airborne contaminants. MSHA's final rule also includes other requirements to protect miner health, such as exposure sampling, corrective actions to be taken when a miner's exposure exceeds the permissible exposure limit, and medical surveillance for metal and nonmetal mines.
Key facts
- Document number
- 2024-06920
- Type
- Final rule
- Action
- Final rule
- Agency
- Labor Department; Mine Safety and Health Administration
- Published
- April 18, 2024
- Takes effect
- June 17, 2024
- Dates
- Effective date: The final rule is effective June 17, 2024, except for amendments 21, 22, 25, 26, 27, 30, 31, 34, 35, 36, 38, 39, 42, 43, 46, 47, 50, 51, 54, 55, 59, 60, 63, 64, 68, 69, 73, 74, 77, 78, 81, 82, 83, 86, 87, 90, 91, 94, 95, 98, 99, 102, 103, 106, 107, 110, and 111, which are effective April 14, 2025, and amendments 4, 5, 8, 9, 13, 14, 17, and 18, which are effective April 8, 2026.
- Docket
- Docket No. MSHA-2023-0001
- Regulation ID (RIN)
- 1219-AB36
- Code of Federal Regulations
- 30 CFR 56; 30 CFR 57; 30 CFR 60; 30 CFR 70; 30 CFR 71; 30 CFR 72; 30 CFR 75; 30 CFR 90
- Topics
- Chemicals; Coal; Electric power; Explosives; Fire prevention; Gases; Hazardous substances; Incorporation by reference; Mine safety and health; Noise control; Radiation protection; Reporting and recordkeeping requirements; Surface mining; Underground mining
- Pages
- 268
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Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.