Idaho semi-weekly world. [volume] (Idaho City, Idaho Territory) 1875-1908, 1890-07-25
MINES OF EL DORADO COUNTY.
CALIFORNIA.


CALIFORNIA.
Cor. Mining and Scientific Press.
KELSEY.
The Big Sandy quartz mine is OPP
Grated by Toledo company, with
Mr.. J. H. Beatty as superintendent.
The property is opened by an open
cut aud tunnel on the large vein.
The ten-stamp mill is running on
their $2 ore. A shaft is going down
to test the vein; so far tho great size
Of the vein has not required great
or depth OF working than 20 feet.
DALMATIl NINE.
This property is operated by a
London syndicate, with Geo. G.
Pearson as manager and N. Fl. Hus-
band formerly OF the Eureka Of Gus
ter county, Col.) as superintendent.
The vein is huge mineralized dyke
Of porphyry, with quartz seams, and
to all appearances is similar to the
seam mines Of the county. The mine
is opened by tunnel and shafts which
cut the ore body 200 feet deep. A
aross-cut 100 feet long has not
reached the wall. The ores are
mined by contract and delivered at
the mill for N CENTS ton. This is
made possible by reason of the large
body Of ore and its loose body char
aoter.
The mill is equipped with three
Huntingtons, crushing rs tons a day
each, and ten stamps crushing rs
tons per day, making the capacity Of
the mill 100 tons every "a hours,
The Dalmatia is an exceptional prop
erty in several ways. First, in this:
that their ore is mined and milled TO,
fly cents ton. THIS is q realization
OF things long hoped for by mining
men.
While all mines may not contain
as large bodies Of ore SO easily exca.
waited still it opens up an unlimited
amount OF mining property low in
grade, which at the present time il
not worked in consequence of the ex.
pense exceeding the ores value
This economy IN working the Dali
malta mine ores is due to the fact
that this property enjoys the distinc.
ton OF being the FIRST quartz mine in
the State.
Run BY ELECTRICITY.
The electric plant is OF the Brush
patent. One mile from the mill the
waters of Rock creek are carried
down the American river and here
400 inches are turned on to 7-foo
wheel, with a pressure of 1124 feet
An electric generator of 126 horse
power is connected with the Peltor
wheel. From this generator tw,
wires run up over the mountain to it
summit, and ut the Dalmatia mill
one mile distant from the generator
connects with an electric motor or DIV
namo in the mill, From pulley OF
the dynamo belt carries the powe
direct to the main shaft. II seem
almost incredible that the two small
wires leading down to the dynam,
should carry in them such wonderful
power, and none the less wonderful
that so small dynamo should driy,
this large mill with its rock. breake
three Huntingtons and ten stamps
with perfect ease and not consume
all Its power. The company viii
now connect the old 20-stamp Go
pher Boulder mill with the sam,
wires and run it with their surplus
power, making their capacity 15t
tons day, The mill has complet,
electric light plant. with turbin,
wheels or three nozzles on the Peltons
A 5o-foot will drive dynamo, ans
the same water can be used confirm
ally as it flows down river. In tbi,
way power can be created on an,
stream sufficient to drive all the mill,
within miles. 1t solves several prob
lens. First, il reduces the cost il
every instances then, too, it allow.
he placing OF the mill in any partic.