16.—(1) A person shall not prime or assist with priming cartridges unless he is a shotfirer or trainee shotfirer.
(2) A person shall not prime cartridges unless he is satisfied that–
(a)all shotholes to be charged with the primed cartridges will be available for charging by the time that he has finished priming the cartridges; and
(b)all the primed cartridges can be fired during his period of duty.
(3) A person who primes a cartridge at the place where it is to be used shall place it in a shothole before priming any further cartridges.