30 C.F.R. § 57.8525 Main fan maintenance.
Title 30 - Mineral Resources
Main fans shall be maintained according to either the manufacturer's recommendations or a written periodic schedule adopted by the operator which shall be available at the operation on request of the Secretary or his authorized representative. [50 FR 4082, Jan. 29, 1985, as amended at 60 FR 33723, June 29, 1995]
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart G—Ventilation
Underground Only
§ 57.8525 Main fan maintenance.
