Australian Capital Territory Numbered Regulations

DANGEROUS SUBSTANCES (EXPLOSIVES) REGULATIONS 2004 (NO 10 OF 2004) - REG 206

This is the audible warning system for use in above-ground blasting operations other than in a mine or quarry:

        (a)     1 minute before firing, an audible signal must be sounded for 15 seconds;

        (b)     the signal ‘Fire on!' must be given immediately before the charge or charges are fired;

        (c)     for the ‘all clear', 3 short audible signals must be sounded for 1 second each, separated by 1 second.