S-2.1, r. 4 - Safety Code for the construction industry

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8.4.2. Only explosives or a combination of explosives developing Class I blasting fumes as established by the Department of Energy, Mines and Resources of Canada may be used in an underground job-site.
R.R.Q., 1981, c. S-2.1, r. 6, s. 8.4.2; O.C. 1959-86, s. 77.