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S-2.1, r. 14 - Regulation respecting occupational health and safety in mines
Section 320
Disposition versions
320. In a compartment of a shaft where a sinking crosshead is used, a device causing the hoist to stop automatically shall be installed less than 50 m (164.0 ft) from the upper stopper. The device shall be adjusted so that it is operated by the safety arm of the sinking crosshead if it does not return to its interlocked position after leaving the upper chair.
In a compartment of a shaft where a sinking crosshead and a bucket are used, a device automatically causing the hoist to stop shall be installed in case the bucket leaves the upper chair level in the descending direction without being accompanied by the crosshead. This device shall be designed to cause the hoist to stop automatically when the bucket descends to less than 3 m (9.8 ft) from the chair engaging position and the dump door does not protrude into the hoisting compartment.
