Section 85(5)(e) in The Coal Mines Regulations, 2017
(e)If white metal is used in the capping of ropes,-(i)its melting point shall not exceed 300 degrees centigrade, and its temperature when poured into the socket shall not exceed 363 degrees centigrade;(ii)in the length of rope which is to lie within the tapered part of the socket, the fibre core, if any, shall be cut and the wires shall be untwisted and thoroughly cleaned;(iii)the socket shall be heated to a temperature of about 100 degrees centigrade before the white metal is poured into it.