Misfires
28. In the event of a misfire the operator shall (if this is not the same person) consult the individual appointed under regulation 8(1)(c) and shall ensure, so far as is reasonably practicable, that—
(a)apart from himself, no person other than the Explosives Supervisor, shotfirer, trainee shotfirer or any other person authorised by him enters the danger area—
(i)where the shot was fired by means of safety fuse, until a period of 30 minutes has elapsed since the misfire, or
(ii)where the shot was fired by other means, until a period of 5 minutes has elapsed since the misfire and any shotfiring apparatus has been disconnected from the shot;
(b)appropriate steps are taken to determine the cause of and to deal with the misfire; and
(c)a suitable record is kept of the misfire.