30 C.F.R. § 57.19091 Signaling instructions to hoist operator.
Title 30 - Mineral Resources
Hoist operators shall accept hoisting instructions only by the regular signaling system unless it is out of order. In such an event, and during other emergencies, the hoist operator shall accept instructions to direct movement of the conveyances only from authorized persons.
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart R—Personnel Hoisting
Signaling
§ 57.19091 Signaling instructions to hoist operator.
