158(1)Where electric blasting caps are used, a person who conducts an underground blasting operation shall ensure that the protective shunt is not removed from the leg wire until connections are made.
158(2)A person who conducts an underground blasting operation shall ensure that
(a)
wires leading to the blasting area are short-circuited while the leads from the electric blasting caps are being connected to each other and to the firing cables,
(b)
the short circuit required under paragraph (a) is not removed until all persons have retreated from the blasting area and the short circuit is so located that a premature explosion would be harmless to the person opening the short circuit, and
(c)
the wires leading to the blasting area are not connected to the blasting machine or blasting switch or cable to the common electrical source until the blasting area has been cleared.
158(1)Where electric blasting caps are used, a person who conducts an underground blasting operation shall ensure that the protective shunt is not removed from the leg wire until connections are made.
158(2)A person who conducts an underground blasting operation shall ensure that
(a)
wires leading to the blasting area are short-circuited while the leads from the electric blasting caps are being connected to each other and to the firing cables,
(b)
the short circuit required under paragraph (a) is not removed until all persons have retreated from the blasting area and the short circuit is so located that a premature explosion would be harmless to the person opening the short circuit, and
(c)
the wires leading to the blasting area are not connected to the blasting machine or blasting switch or cable to the common electrical source until the blasting area has been cleared.