Australian Capital Territory Numbered Regulations Australian Capital Territory Numbered Regulations(1) This regulation applies to a blast hole in which a bulling charge has been fired.
(2) The shotfirer must ensure that the blast hole is not reloaded until—
(a) the resulting chamber has been filled with water; or
(b) the hole has been left to cool to a safe temperature over a sufficient period, which must be for at least 1 hour.
Note Bulling is also known as chambering and springing .