214 University Geological Survey of Kansas. 
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Fig. 22. Face of stope and drift, showing a method of support. 
passes around a sheave at the shaft end of the tramway, 
draws the empty car from the mill back to the shaft; or 
transference may be accomplished by means of a properly 
inclined track and an endless cable to which the two cars are 
attached. Sheaves are placed at either end of the tramway 
and so. facilitate the passage of the rope back and forth. A 
steeper pitch is usually given to the first part of the track over 
which the loaded car passes, which is to give sufficient mo- 
mentum to carry both cars to their destination. 
Engine planes differ from gravity planes in that the mo- 
tive power is furnished by an engine, and further, that the 
grade is reversed ; 7. e., the mill end is higher than the shaft 
end, the loaded car being hauled up the slope or incline. 
Engine planes are often employed in hauling and elevating 
ore from open cuts or stock piles to the crusher room floors 
‘of the mills. Cable transfer or aerial rope haulage is em- 
ployed, and a system of aerial rail haulage is now in quite 
common use. 
Only one instance was noted where a cable and bucket 
were employed as conveyers. Plate XXIX. Asystem of wire 
rope hauling was installed at the plant of the Ozark Mining 
Company on the Gracie Clark property. Here an inch steel 
wire cable is stretched from the shaft to the mill and firmly 
anchored by ‘‘dead men”’ at either end. Upon this cable a 
carrier or bucket holder, A, is placed. Figure 26. The holder 
