The Ordway new era., 1914-07-24
COloRADOMETAL PRODUCTIONIN1 1918
sss4s2s-PRooucToN ZINC AND GOLD DE-
CREASED. SILVER COPPER AND LEAD INCREASED


Washington.-The output Of Colora'
do mines during 1918. according to
Charles w. Henderson Of the United
States Geological Survey. was $1S.146.-
GIG in gold, 9.325.255 ounces OF silver,
s7,C20,364 pounds Of lead; 1895, 269
pounds Of copper, and 119.346.429
pounds OF zinc Tin terms Of spelter and
zinc in zinc oxide), with total gross
value of recovered metals OF $35, 449.-
298. as compared with $37.320.966 In
1912, a decrease in value for 1913 OF
$1.s71. 6Sa. or s per cent There was
q decrease OF $441.646 in gold. an IN
crease Of 1.113,185 ounces Of silver, an
increase OF 12,378.097 pounds of lead,
an increase OF 190.966 pounds Of cop
per, and decrease OF 12.876.383
pounds Of zinc. The heaviest decrease
in value was $2,439.974 for zinc, but
there were Increases Of 1882, 031 for SILL
yer and $469.394 for lead.
The tonnage treated by the Globe,
Leadville, Pueblo. Durango and Salida
smelters from British Columbia. Can
ada. Colorado Idaho. South Dakota,
Utah, and other states. including
considerable tonnage Of zinc residues
from Kansas and Oklahoma zinc smell
ters, showed q small increase for the
year. An increased tonnage from Col
orado was shipped to the Garfield.
Midvale. and Murray plants in Utah.
Cyanide precipitates and ore were
shipped from Colorado to Omaha. The
United States Zinc Company's mag
netic plant and zinc smelter at Pueblo
was operated steadily on zinc-lead
ores from various counties in Colo
RADIO, and also from Arizona, Idaho.
Montana, Nevada, and Utah. The
Western Chemical Company's sui
phuric acid. magnetic separation, and
wet concentration plant, at Denver.
was operated steadily, as was the EN-
pire Zinc Company's magnetic separa-
ton plant, at Canon City, both treat
ing. chiefly Leadville lead-zinc ores.
The Sutton. Steele and Steele dry con-
oentration and static electric separa-
ton plant was operated throughout
the year on many tests lots and later
on custom ore purchased from various
districts in the state.
Cripple Creek produced go per cent
Of the total gold yield OF the state.
with q yield Of $1O.905.O03, as COM
pared with 81. 00S.362 in 1912. The
output for II months from Cripple
Creek seemed to indicate production
for ~ months Of I'll. 1884, 900. but the
severe storm Of December 4th so Grip.
pied transportation facilities that tho
December yield fell off heavily. There
was an increased yield Of gold bullion
from custom cyanidation plants at
Colorado Springs and from the cyan
.idaticn mills In the district, the de-
creased yield being due to decreased
tonnage of smelling ore. The Roose-
welt tunnel continued to lower the wa
ter level gradually. In the vindica-
tor and Golden Cycle mines electric
pumps were installed. Lower levels
were opened In various properties.
The Golden Cycle and Portland cy-
anidation mills at Colorado Springs
wcr operated steadily. The Portland.
STATIONS Independence, Ajax. and
several other cyanidation plants I'm
the district were operated continu-
yously. The Standard chlorinationi and
cyanidation. plant at Colorado City
was idle. but the Union cyantdation
plant, at Florence, was operated part
of the year on old tailings. The pub
lie report Of the Portland company for
1918 shows a total of 1882 tons Of
an average assay value Of $2.95 per
ton was treated at the Portland com
pany's Victor mill, with satisfactory
net earnings. The STATIONS Inde-
NON A opno yoporf ehoxva a roc0verv of
78.4S per cent on ore averaging $3.076
per ton, the cost of working the mill
being $1.46 per ton. ..E
Lake county Chiefly Leadville, but
for 1913 including the new Lacka-
wanna district, in addition to Big En-
slish. gulch and Sugar Loaf districts)
produced $1,023.631 In gold. 3.400.31s
ounces of silver (which represents 36
per cent Of the state yield. 1,s2S,ss7