MSHA - Code of Federal Regulations - 30 CFR 77.1008
30 CFR § 77.1008
Relocation of drills; safeguards.
(a) When a drill is being moved from one drilling area to another,
drill steel, tools, and other equipment shall be secured and the mast placed
in a safe position.
(b) When a drill helper is used his location shall be made known to
the operator at all times when the drill is being moved.