Section 159(8) in The Coal Mines Regulations, 2017
(8)In case of a mine having problems of fires or spontaneous heating along with the working of coal seams of degree two or degree three gassiness, the Chief Inspector may by an order in writing and subject to such conditions as he may specify therein, require construction of explosion proof ventilation stoppings between the main intake and the main return airways and at such other places as may be specified by him.
