Section 145(5) in The Coal Mines Regulations, 2011
(5)Every stopping erected in accordance with the provision of sub-regulation (4) and the pillars containing such stoppings, shall be plastered with fire resistant or fire retardant sealant of adequate thickness using high pressure guns so as to completely fill up the cracks, cavities, crevices, joints, slips, fractures and cleats present in the working in order to completely seal off such area, which shall be kept maintained as leak proof.
