27-352. Inspection and construction of hoists
A. Hoisting machinery, cables and sheaves shall be inspected once every twenty-four hours by a competent person appointed by the operator for that purpose, and the person making the inspection shall immediately report in writing to the operator all defects found.
B. Ropes or cables used for hoisting purposes shall be of approved quality and manufacture. In shafts and winzes over two hundred feet deep, wire ropes or cables only shall be used for hoisting purposes.
C. Head frames where persons are hoisted at a speed of over two hundred fifty feet per minute and where more than twenty-five persons are employed shall be constructed to allow at least twenty-five feet above the hoist landing stage in which the cage, skip or bucket can travel freely in case of an overwind.