(b) the current should be cut off from all electrical equipment
and conductors when the content of flammable gas in the
general body of the air exceeds safe limits;
(c) no blasting should be done at any place where the content
of flammable gas in the atmosphere exceeds safe limits;
(d) suitable gas detectors and gas alarms should be provided;
(e) the atmosphere should be tested at suitable intervals in every shift;
(f) all workers should be withdrawn from the underground workings when the content of flammable gas in the general
body of the air exceeds a percentage to be determined by the competent authority; and
(g) no worker should be allowed to carry matches or cigarette lighters underground.