Section 79(5)(a) in The Coal Mines Regulations, 2017
(a)There shall be provided one or more brakes on the drum or the drum-shaft, which-(i)if there are two cages or other means of conveyance shall hold such cages or other means of conveyance when the maximum torque is applied in either direction; and(ii)if there is only one cage or other means of conveyance shall hold the loaded cage or other means of conveyance in midshaft when the maximum torque is applied downwards.