U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 28, 2025

All TitlesTitle 30Chapter IPart 57Subpart G - Subpart G—Ventilation

SURFACE AND UNDERGROUND
§ 57.8518 - Main and booster fans.
§ 57.8519 - Underground main fan controls.

UNDERGROUND ONLY
§ 57.8520 - Ventilation plan.
§ 57.8525 - Main fan maintenance.
§ 57.8527 - Oxygen-deficiency testing.
§ 57.8528 - Unventilated areas.
§ 57.8529 - Auxiliary fan systems.
§ 57.8531 - Construction and maintenance of ventilation doors.
§ 57.8532 - Opening and closing ventilation doors.
§ 57.8534 - Shutdown or failure of auxiliary fans.
§ 57.8535 - Seals.
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