S-2.1, r. 14 - Regulation respecting occupational health and safety in mines

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456. When explosives in bulk and in cartridge form are loaded pneumatically:
(1)  only semiconductor hoses manufactured for that purpose may be used;
(2)  the loading equipment may not be grounded by connecting it to piping, a rail or other continuous conductors;
(3)  the grounding shall be performed according to the manufacturer’s specifications;
(4)  if electric primers are used:
(a)  no plastic or other non-conducting liner may be used in the hole;
(b)  the loading equipment shall be grounded if the primer is placed in the drill hole before or during loading.
O.C. 213-93, s. 456.