30 C.F.R. § 57.8519 Underground main fan controls.
Title 30 - Mineral Resources
All underground main fans shall have controls placed at a suitable protected location remote from the fan and preferably on the surface.
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart G—Ventilation
Surface and Underground
§ 57.8519 Underground main fan controls.
