412. For any open-pit mine, each primary blast shall be entered in a register of the work station concerning primary blasting under the signature of the blaster in charge of the blast. This register shall contain the following entries:(1) the date, time and place of the blast;
(2) the location, depth and number of holes blasted;
(3) the mass of explosives, the depth of the stemming used and the ignition delay used, for each hole;
(4) an evaluation of the mass of the explosives used per ton of rock broken;
(5) dangerous situations such as misfires and the damage caused by fly-rocks.