30 C.F.R. § 75.1402 Communication between shaft stations and hoist room.
Title 30 - Mineral Resources
[Statutory Provisions] There shall be at least two effective methods approved by the Secretary of signaling between each of the shaft stations and the hoist room, one of which shall be a telephone or speaking tube.
Title 30: Mineral Resources
PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
Subpart O—Hoisting and Mantrips
§ 75.1402 Communication between shaft stations and hoist room.
