30 CFR 57.19091 - Signaling instructions to hoist operator.
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 published on 2013-07-01
no entries appear in the Federal Register after this date.