216 University Geological Survey of Kansas. 
to the bucket carrier, J (figure 26). The rod, R, is then 
pulled to the right and causes the friction wheel, O, to strike 
the drive wheel on the shaft with the pulley V, which sets kK 
in motion, thus carrying the load on the carrier or truck to 
the mill. When the bucket is empty the rod, R, is pushed 
back, forcing the wheel, O, against the friction wheel, which 
drives the pulley M, reversing the direction of the rotation 
of K, and thus returning the buckets to the shaft. 
In this particular case the track cable is somewhat over 
three hundred feet long, and is about 50 feet above the ground 
at the highest point. 
It is an easily applied and an economic method for the 
transference of ore, especially when the ground intervening 
between the shaft and the mill is rough. It is, at any rate, 
much more rapid than the more common method of handling 
cars on a tramway, but has, however, been used but little in 
the district. 
Aerial rail haulage consists of a wooden rail track, sup- 
ported by bents, which extends from the crusher room to the 
mouth of the shaft, giving an inclination of eight or ten de- 
grees. When the distance to the shaft is not great, to pre- 
vent a too steep inclination of the track, the vertical distance 
above the mouth of the shaft is increased, thus maintaining 
the proper slope. 
Upon the rail which forms the track, which is supported 
by a second rail or beam placed directly above it, operates a 
truck. This truck supports the receptacle in which the ore is 
placed. In the mine in question (the Murphy mine) the 
car which is run into the mine is the conveying receptacle. 
It is run to the foot of the shaft and attached to a hook, 
which in turn is connected with a pulley. The pulley is 
supported by a traction rope, which is run out by the weight 
of the car, being tripped by a lever, when the truck comes to 
rest at a point directly above the shaft. When a loaded car 
has been attached to the pulley the hoisting signal is given 
and the engineer at the mill end of the system starts the 
winding engine, thus raising the car, which, when it reaches 
the top, is connected automatically with the truck, and con- 
tinued winding draws the truck with its load of car and ore 
