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S-2.1, r. 14 - Regulation respecting occupational health and safety in mines
Section 28
Disposition versions
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.
Notwithstanding the first paragraph, when scaling is carried out using mechanized equipment, the roofs, walls and working faces of an underground excavation need not be drilled and scaled manually if the following conditions are met:
(1) the scaling is carried out in accordance with a procedure provided in writing by an engineer taking into account the ground control program and the mechanical properties of the rock; and
(2) surface support is installed on the roofs, walls and working faces.
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.
