MSHA - Code of Federal Regulations - 30 CFR 77.210
30 CFR § 77.210
Hoisting of materials.
(a) Hitches and slings used to hoist materials shall be suitable for
handling the type of materials being hoisted.
(b) Men shall stay clear of hoisted loads.
(c) Taglines shall be attached to hoisted materials that require
steadying or guidance.