302 University Geological Survey of Kansas. 
on either side of the bin upon which wagons were drawn, thus 
supplying the bin with tailings sands and slimes. The bin 
was divided longitudinally into two compartments by a par- 
tition, above which a track was constructed, upon which op- 
erated a long rectangular, hopper-shaped box mounted on 
trucks. From the center of the bottom of this box extended 
a short piece of gas pipe to which was attached a [, from 
which, extending at right angles to the body of the hopper, 
were two pieces of gas pipe which projected over the middle 
of each compartment. The ends of these pieces of pipe were 
furnished with elbows into which were screwed a few (four to 
six) inches of pipe, which extended downward. Valves were 
placed in both of these arms, so that when closed no water 
could escape from the hopper by way of the pipe connection. 
When full of water the hopper could be drained into either 
one or both of the compartments by changing, 7. e., opening 
or closing the valves. 
A line of pipe ran from the mill, where connection was 
made with a large tank, to the bin and extended the entire 
length of the same. Connected with and extending down- 
ward from this line of pipe were short lengths of pipe, pro- 
vided with valves, which were situated eight or ten feet from 
either end and above the middle of the bin. The hopper- 
shaped car could then be run under any one of these connec- 
tions with the main line of pipe and thus receive feed water 
from the same. By opening the valves in the pipe connec- 
tions of the hopper, water was admitted to the bin on either 
side desired, which gradually washed the tailings down the 
inclined floor into a launder at the lowest point, which con-' 
nected with the boot of an elevator; the elevator delivering 
it in turn to the reducing apparatus. By advancing the hop- 
per from the front to the rear end, the contents of the bin 
could be fed to the elevator and thence to the mill. If ma- 
terial was constantly being shoveled into the bin the hopper 
might remain at the front or feed end of the bin or under the 
first connection with the feed pipe. As the bin had a storage 
capacity of several hundred tons, it could tide over spells of 
bad weather, which would otherwise necessitate a shut down. 
No other form of feeding or feed regulating apparatus was 
noted in connection with the concentrating operations in this 
district. 
