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

Full text
29. The walls of an excavation or a trench dug on the surface for the discovery or preparation of a mine shall be shored in accordance with the plans and specifications of an engineer.
The plans and specifications shall be kept on the mine site and be available at all times.
O.C. 213-93, s. 29.