Section 85(2)(d) in The Coal Mines Regulations, 2017
(d)Subject to such exemption as may be granted by the Chief Inspector in writing and any conditions as he may specify therein, no rope, the breakingload of which at any one point therein is less than ten times the maximum static load on it when the cage or other means of conveyance attached to the end of the rope is at the lowest working point, shall be used.