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

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41.1. The presence of a seismic excavation must be determined in writing by an engineer. The written document must be kept with the plans and specifications required pursuant to section 28.01.
The seismic excavation must be delimited and identified before the work begins and only authorized persons may be in the risk zone.
O.C. 33-2024, s. 8.