30 C.F.R. § 77.1902 Drilling and mucking operations.
Title 30 - Mineral Resources
Diesel-powered equipment used in the drilling, mucking, or other excavation of any slope or shaft shall be permissible, and such equipment shall be operated in a permissible manner and shall be maintained in a permissible condition.
Title 30: Mineral Resources
PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES
Subpart T—Slope and Shaft Sinking
§ 77.1902 Drilling and mucking operations.

