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

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74. Every stope shall have at least 2 access routes practicable at all times, except:
(1)  stopes less than 30 m (98.4 ft) in length;
(2)  retreat mining stopes;
(3)  stopes mined by the rooms and pillars method.
O.C. 213-93, s. 74.