The two inclines are separately worked, in each case by means of a wire-rope, with a short piece of chain at each end; the loaded waggons going down the incline serving, by means of the wire-rope passing over a wheel or drum at the head of the incline, to bring up the waggons from below. Rollers are placed between the rails for supporting these wire-ropes as they are drawn up or down. The rope at the tail of each descending train being cast off, as soon as the train reaches the comparatively level portion of line at the foot of each incline, and before it descends so low as to foul the upper end of the wire-rope at the wheel or drum.