COAL CLIFF COLLIERY. 



161 



there is a scheme on hand when by working from a pit, coal 

 can be raised to the level of the railway which cuts through 

 the property. 



The coal on issuing from the mine is tipped on to short 

 stationary screens; the slack that passes between the bars is 

 hauled by ropes up an incline to the top of hoppers. The round 

 coal and any unscreened coal to be shipped is hauled to the end 



Fig. 92. Switch. 



of the jetty by means of an endless rope, the terminal pulley 

 oi which is placed vertically under the decking. (Fig. 92.) 

 The trucks are caused to go up one end of a slight double in- 

 cline or kip made by placing beams 011 the decking, which serve 

 as longitudinal sleepers for the rails. When released from 

 the endless rope, the trucks run down by gravity to an end 

 tippler. (Fig. 93.) When emptied, the truck is switched 



K 



Fig. 93. Tippler at End of Jetty, Coal Cliff. 



