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

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420. The entire length of a borehole opening into an explosives magazine shall be sealed with cement.
O.C. 213-93, s. 420; O.C. 621-2013, s. 8.
420. The entire length of a borehole opening into a chamber of an explosives magazine shall be sealed with cement.
O.C. 213-93, s. 420.