The Quarries (Explosives) Regulations 1988

Misfires

10.  In the event of a misfire the shotfirer in charge of the shot shall consult the manager who shall ensure so far as is reasonably practicable—

(a) that, apart from himself, no person other than the 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 electrical shotfiring apparatus has been disconnected from the shot;

(b) that appropriate steps are taken to determine the cause of and to deal with the misfire;

(c) that a suitable record is kept of the misfire; and

(d) that appropriate steps are taken to prevent theft of the explosives and detonators or their initiation by an unauthorised person.