30 C.F.R. § 75.1402-2 Tests of signaling systems.
Title 30 - Mineral Resources
Signaling systems used for communication between shaft stations and the hoist room shall be tested daily.
Title 30: Mineral Resources
PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
Subpart O—Hoisting and Mantrips
§ 75.1402-2 Tests of signaling systems.
