Surface and Underground

  1. Law
  2. CFR 30
  3. Mineral Resources
  4. Mine Safety and Health Administration, Department of Labor
  5. Metal and Nonmetal Mine Safety and Health
  6. Safety and Health Standards - Underground Metal and Nonmetal Mines
  7. Ventilation
  8. Surface and Underground

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Section
57.8518

Main and booster fans.

Section
57.8519

Underground main fan controls.