What US MSHA 30 CFR Part 57 - Safety and Health Standards for Underground Metal and Nonmetal Mines requires
MSHA 30 CFR Part 57 establishes federal safety and health standards for underground metal and nonmetal mines including gold, silver, copper, zinc, and potash operations, mandating refuge chambers or equivalent escape routes, diesel engine emission controls (DPM 160 ug/m3 TC), ventilation minimum 200 CFM per brake horsepower for diesel equipment, silica PEL of 0.05 mg/m3, and mandatory self-contained self-rescuers (SCSR) for all underground workers.
Pillar: Mining & Natural Resources · Authority: US Mine Safety and Health Administration (MSHA) - Department of Labor - Metal and Nonmetal Mine Safety and Health · Version: 1.0.0 · Last updated:
Primary source: https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-57
SHA-256 integrity: c36552c79df941830143599425cb70ee5126d74ff3094acbcfc2f971fd1d3552
Primary Citations — 7 traced to source
- 30 CFR Part 57 - Safety and Health Standards - Underground Metal and Nonmetal Mines
- Federal Mine Safety and Health Act of 1977 - 30 U.S.C. Chapter 22 (Mine Act)
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