342 



COALFIELDS AND COLLIERIES OF AUSTRALIA. 



A creeper chain takes the skips to the tippler. An occa- 

 sional pair of wheels are attached to the creeper chain, which 



Cf 





run in a trough- At the foot of the incline is a chock working 1 

 on a hinge and weighted at one end; the chock is curved, and 

 on its back recesses are cut for the axles of the skips to rest 



