§ 33.38. Pulleys and sheaves.
(a) All pulleys and sheave wheels used in or about a pit or quarry shall be of a size and design sufficient to sustain the maximum load hoisted.
(b) All bolts in sheave wheels and carriages shall be provided with cotter pins turned over at the ends to prevent the nut from coming off the bolt, or with a jam nut and lock washer in lieu of the cotter pin.
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