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

Full text
67. The space between the tops of the rungs of a ladder shall be at least 250 mm (9.8 in) and not more than 300 mm (11.8 in), and that space may not vary by more than 13 mm (0.5 in) on any one ladder or from one ladder to another on the same ladderway.
O.C. 213-93, s. 67.