387. Except during the sinking of a shaft, any hoist compartment used for transportation of materials or equipment shall be partitioned off at the entrance to the shaft and at each shaft station in service, except the side where the materials or equipment are loaded or unloaded. The partition shall:(1) have a height above the floor of the shaft station at least equal to the height of the conveyance plus 2 m (6.6 ft);
(2) extend at least 2 m (6.6 ft) below the floor.
However, a partition built on or after 1 April 1993 shall:(1) be in wood at least 35 mm (1.4 in) thick or a metal lattice made of No. 9 AWG galvanized steel wire mesh and forming links a maximum of 40 mm (1.6 in) on a side;
(2) have a height above the floor at least equal to the lower of the following heights:(a) the height of the conveyance plus 2 m (6.6 ft);
(b) 7 m (23.0 ft);
(3) extend at least 2 m (6.6 ft) below the floor.