MOUNT KEMBLA COLLIERY. 239 



the clip strikes its fork, the bar to which it is connected is 

 pushed forward, the triangular head pushes against the angle- 

 iron attached to the bar switch, and directs the skip on to its 

 proper rails. 



The coal is screened near the mouth of the tunnel, after which 

 it is conveyed in hopper waggons down a gravity plane, one at 

 a time. At the bottom, the waggons are collected to form a 

 train which is then drawn by locomotives to the main line, or 

 the jetty. The self-acting incline has three rails above and 

 two below the pass-by. The waggons are lowered down the 

 incline from two drums on one shafting ; one rope passes over, 

 the other under its drum, and the speed is regulated by a 

 brake operated from a steering wheel. 



The hopper waggons, instead of being drawn by horses, 

 as is usual, between the brow of the incline and the screens, 

 are attached to an endless rope that circulates oil the outside 

 of the incoming and outgoing pairs of rails. A chain is 

 hooked on to one side of the waggon; at the other end of the 

 chain is a long-handled clip, which is made to embrace the 

 endless rope, and is held by the man in charge as he walks 

 along and keeps it pressed against the rope so as to ensure 

 a good grip. The clip can be readily detached at any point; 

 and, as the waggon does not get any great way on it, it is 

 easily stopped under any of the sliding doors fixed to the 

 bottom of the coal hoppers, or at the top of the incline, as the 

 case may be. 



Mount Kembla is following the lead given by South 

 Bulli and Bellambi, and is taking steps to instal an up-to-date 

 electric power plant. This is being provided by Noyes Bros., 

 of Sydney, and when complete will consist of a 220kw., 

 2200 volt, three phase British Westing-house alternator, with 

 belted exciter, coupled to a Belliss and Morcom high speed 

 engine, running at 375 revolutions per minute and capable 

 of developing 365b.h.p. with 1401bs. of steam at the engine's 

 stop valve. A motor generator set, consisting of a 55 b.h.p., 

 200 volt, 710 r.p.m., British Westinghouse slip ring motor, 

 belted to a 40kw. British Westinghouse 500 to 550 volt, 

 compound wound, direct current generator. A 55 h.p. 200 

 volt, 710 r.p.m. British Westinghouse motor, for driving a 

 500 volt, direct current, surface generator, also two 40 h.p., 

 220 volt, 710 r.p.m. haulage motors. 



The alternator is already erected on the slope close to the 

 mouth of the tunnel. From there the power is carried into the 

 mine through three core paper insulated, lead sheathed, and 

 steel taped armoured cables, manufactured by the Callender 

 Cable and Construction Co. Ltd., of London. The cables are 

 buried direct in the ground. The total distance of high 



