URINGTON.] 
OPEN-CUT MINING. 
71 
ram and self-dumping bucket in open-cut work. Its efficiency was 
found to be high and Us cost low in comparison with this well-known 
Klondike method. In general it 
nay be said that derricking is a 
simple, efficient, adaptable, and 
comparatively cheap method of 
forking open cuts whore gravel 
nust be shoveled into the first 
'eceptacle by hand and the bed 
*ock cleaned b} r men. 
TRACKS AND INCLINES. 
The track and incline working 
it No. 8, Anvil Creek, Nome dis- 
trict, is fairly representative of 
)pen-cut work by this system. 
See tig. 9.) A special feature of 
lie plant, however, is the removal 
)f the overburden, in all 7 feet 
)f muck and 5 feet of barren 
gravel, by hydraulicking. Seven 
mndred miner's inches are used 
hrough a giant, under a pressure 
)f 200 feet obtained by pumping. 
Aiter the barren ground has been 
removed the remaining gravel, 
iveraging about 6 feet in depth, 
s shoveled into cars, pushed to 
lie foot of an incline, elevated, 
ind washed. The tailings are 
mpounded on the claim, being 
craped from the end of the 
luices by 2-horse scrapers. 
At the time of observation 6 
ars were in use, though this 
umber can be varied to suit the 
onditions in hand. Two men 
re employed with each car. 
'hey take turns in shoving the 
ar to the incline, one remaining 
t the bank with pick. The cars 
t this plant were of a capacity 
f 22£ cubic feet, though larger 
nes might be found more eco- 
omical. From 250 to 300 cars are run up each 10-hour shift. 
The material is lifted 30 feet to the mud box and there clumped by 
