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(e) no blast shall be fired until warning signals have been made within a radius of not less than five hundred feet from the point of blasting or such other distance as the Authority may approve having regard to the locality, nor until all persons, except shot firers, are beyond such distance from such point of blasting:
() warning signals shall be made by the displaying of red flags and by the beating of gongs for at least five minutes previous to the firing off of the blast continuing until all the charges have been fired:
(e) no blasting shall take place except between such hours as the Authority may from time to time permit by notification in the Gazette or, in the case of undersea blasting, by a Notice to | Mariners issued by the Director of Marine after consultation with the Authority;
(A) no fuze of less than two minutes burning time (four feet of
standard safety fuze) shall be used;
() if matches are used to light fuzes, not more than two fuzes shall be lit by any one man at any one time, and if two fuzes are so lit, the first fuze lit shall be of not less than three minutes burning time (six feet of standard safety fuze);
() if an acetylene lamp is used to light fuzes, not more than eight Cuzes shall be lit by any one lamp at any one time, the lamp holder shall be accompanied by a second man ready with a box of matches to relight the lamp in case it should be blown out and each successive fuze shall be progressively langer than the last ignited fuze by not less than fifteen seconds burning time (six inches of standard safety fuze);
(4) if a special igniting squib is used to light fuzes the rules for
igniting by an acetylene lamp contained in sub-paragraph shall apply except that in this case dot more than ten fuzes may be lit from one squib;
() all igniting squibs shall be carried away from all the charges after use and shall not be thrown down near a charge nor inte water covering a charge;
(m) no dynamite or home made squibs shall be used to light fuzes: (n) if an electric exploder is used for firing charges it shall be so
designed and fitted with a detachable handle or key as to prevent unauthorized use of the exploder, the leads to the exploder or firing switch shall not be connected until the shot firer has tested the circuit with a galvanometer, the leads shall be connected by the shot firer immediately before firing, and the shot firer shall connect the leads at the charge, set up the
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exploder in a position where he can see it while he is making the connexion and carry with him the detachable handle or key of the exploder while so doing:
(o) electric mains shall not be used for firing except with the
permission of the Authority;
(p) where electric mains are used for firing, the switch controlling the circuit shall be contained in a box so arranged that the box cannot be closed unless the switch is removed from the box, and the shot firer shall carry the key of the switch and shall do the firing himself;
(q) detonating or other instantaneous fuze shall not be used except
with the permission of the Authority:
(r) if detonading or other instantaneous fuze is used the rules for electric shot firing contained in sub-paragraph (0) shall apply, except that the single detonator required to discharge all blasts shall not be inserted until the warning signals required by sub- paragraph (c) have been made for at least five minutes;
(s) every faze shall be of such a length as to allow the lighting
crew to reach safety:
()the authorized shot firer in charge of the blasting shall count the shots as they fire and if any shot is not accounted for, it shall be treated as a misfice.
(2) Any person who refuses to leave the blasting area upon the making of any warning signal referred to in sub-paragraph (e) of paragraph (1) shall be guilty of an offence.
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83. The shot firer in charge of any blasting shall keep a register in Register of such form as may be prescribed by the Authority of the holes bored, operations to the depth of the holes, the amount of explosives used in each bore and be kept the time of each firing.
84. (1) If any shot fails to fire-
(a) when firing electrically the circuit shall be tested again, if possible, and an attempt shall be made to refire before the charge is approached and if this fails to explode the charge the leads shall be disconnected by the shot firer and the charge approached after fifteen minutes have elapsed;
(b) when firing by safety fuze-
(i) the charge shall not be approached by any person until at least one hour has elapsed;
(ii) if the hole is tamped but undamaged, the tamping shall he carefully removed with a wooden or copper scraper or scoop and a fresh primer shall be placed on top of the charge, lamped and fired;
Misfires.