Section 196(16) in The Coal Mines Regulations, 2011
(16)Except in a stone drift or a sinking shaft, not more than 16 shots shall be fired in any one round:Provided that where more than six shots ate to be fired in one round, they shall be fired electrically:Provided further that in the case of opencast working any number of shots can be fired in one round if they are fired electrically by an approved type of shotfiring device of adequate capacity.
