199. Precautions in the use of permitted explosives.
(1)No detonator shall be used, unless it is of a type approved by the Chief Inspector.(2)Where more than one shots are charged for firing, the shots shall be fired simultaneously.(3)The aggregate charge in any shot to be fired in coal shall not exceed such permissible maximum charge, as the Chief Inspector may, by a general or special order, specify for the kind of permitted explosives used.
