437.2. Notwithstanding section 437.1, drilling in an open-pit mine may be carried out on broken rock without an examination to detect misfires if the drilling pattern is staggered to ensure a distance of 1.5 m between the holes for the previous blasting and the holes drilled.
Drilling under the first paragraph shall be carried out in accordance with a written procedure drawn up by an engineer.
33-2024O.C. 33-2024, s. 151.