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

Full text
237. A friction hoist shall have a device causing application of the braking devices and stopping the hoist when:
(1)  slipping produces a difference in speed of 2 m (6.6 ft) per second or more between the pulley and a rope;
(2)  the loop of a tail rope rises 1 m (3.3 ft) or more;
(3)  a hoist or a counterweight traverses 25% of the upper retarding zone at its full rated speed.
O.C. 213-93, s. 237; O.C. 465-2002, s. 16.