Section 88(1)(c) in The Coal Mines Regulations, 2017
(c)once at least in every thirty days, every winding rope, by passing the rope at a speed not exceeding 0.5 meter per second, and for the purpose of this examination, the rope shall be cleaned of any encrusted dirt and grease at all places particularly liable to deterioration and at other places, not more than thirty meters apart throughout the length; and any reduction in the circumference of the rope and the superficial condition of the wires as to wear, corrosion, brittleness and fracture at every such place shall be noted; and