The shotfirer must ensure that—
(a) charges in all the blast holes that are charged in a single firing location are—
(i) fired as a single round; and
(ii) fired without excessive delay; and
(b) if a charge is not fired and exploded, it is dealt with as a misfire in accordance with division 2.9.11 (Misfire precautions); and
(c) a blast hole that is charged is kept under constant and effective supervision until the charge is fired.
Division 2.9.11 Misfire precautions