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

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28. The roofs, walls and working faces of an underground working shall be drilled and scaled to keep them free of any rock likely to come loose.
Except in mines containing soluble minerals, the roofs, walls and working faces of mines shall be washed before sounding and scaling to eliminate any dust created following blasting.
O.C. 213-93, s. 28; O.C. 1236-98, s. 6.