The Keota news., 1918-01-25
COLORADO NINE EOUTPU1
COPPER HAS SLIGHT iNcRgAoG
OVER PREVIOUS YEAR.
Geological survey Gives Figures On
Gold. silver, Lead. Copper and
Zine Production In 1917.

Western NswsDapsr Union News esrvtes.
Washington.-The mine output OF
gold. silver. copper. lead and zinc In
Colorado for eleven months Of 1917.
and the estimated output for Decem'
Der. according to data compiled BY
Charles w. Henderson. Of the United
States Geological Survey. Department
of the Interior. amount to about 31e.'
100000 in gold. 7.s27.oO0- ounces OF
silver. 67.5O0.000 pounds Of recovera-
BILE lead. 100000 pounds ot copper.
and 14.O0O.O 900 pounds Of recoverable
zinc. having . total value Of nearly
$40 GOO. 900. compared with $lS.163.-
S21 In gold. 7.666.5l4 ounces Of silver.
70.914.0S7 pounds OF lead. S.614.0S1
pounds of copper. and 134.zSs.46s
pounds of zinc. having . total value
OF &49.2OO.G75 in 1915. This estimate
shows q decrease Of 81. 49,. 900 In gold.
100000 ounces OF silver. and 100000
pounds OF lead. The production OF
copper showed q slight increase. but
that Of zinc showed . decrease Of
about 10000. 900 pounds. With the In
creased average prices for silver and
lead there was an increase Of $685.
900 for silver and $1.317.000 for lead.
The decrease in the value Of zinc was
nearly $s.0OO.O00.
The lead smelters In the state. at
Globe. Leadville. Pueblo. Durango
and salida. were operated about ~
in 1916, the ore coming from Arizona.
Canada. Colorado. Idaho. South Dako-
Ia and other states. and including .
large quantity OF zinc residues from
Kansas and Oklahoma smelters. Tho
flotation plant installed In 1915 at the
Durango smelter to remove the sine
from the zinc-lead sulphide ores OF the
San Juan region continued TO be oper-
ated during 1917. The copper mating
plants at Ouray and Vulcan were
idle. The United States Zinc Co.'S
magnetic INSTRUMENTATION mill and
zinc smelter at Pueblo were actively
operated on zinc ores from Colorado
and other western states. The West
ern Chemical Co.'S acid plant and
magnetic.separatioh wet-concentratjon
mill at Denver and the Empire Zinc
Co.'S 2OO.ton neutrality-suspicious.
plant at Canon City were operated
steadily. both treating chiefly Lead.
vile lead zinc sulphide ores. The
River Smelling L Refining Co.'S plant
at Florence continued to treat sine.
leadcopper sulphide ores from several
counties in Colorado. part OF the pro
duct being forwarded to this com.
pany's electrolytic zinc plant at Keo-
kuk. Iowa. The Western sinc.oxide
plant At Leadville was operated stead
lily on zinc carbonate ores. Copper
ore and cyanide precipitates were
shipped from Colorado to the smelter
at Omaha. and some copper and lead
ores were shipped to plants In Utah.
As predicted In the six months re-
view Of operations In Colombo. the
production from Cripple Greek WAS
less than in 1916. but the production
during the last six months Of 1917
was somewhat larger than during the
first six months, and the total produc-
ton Of Cripple Greek for the year
was $l01. $40 900, q decrease Of $1,b70s
900. During the year the Roosevelt
tunnel was continued 20 - to end at
the Portland mine. not at the Golden
Cycle Vindicator mine. ~ originally
intended. A crosscut was also start
ed toward the Cresson mine. The
Portland Co. abandoned its plan OF
using the flotation process in it, N
dependence mill. at Vindicator. ana
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