Section 252(2)(e) in The Coal Mines Regulations, 2017
(e)procedures in place to be followed by workers who remain to perform critical operations before they evacuate, which include-(i)the selection of only those personnel who have received special training to respond to critical operations and mine emergencies, including mine fires and explosions;(ii)having procedures in place to ensure the locations that are safe for persons who would not be immediately withdrawn;(iii)having the personnel equipped with the necessary gas-detection equipments and other equipments or tools necessary to respond to the critical operation at hand;