Rocky Ford enterprise., 1914-07-24
OLoRADoMETAL PRODUCTIONIN 1918
TOTAL OUTPUT sss44s2sAPRoDucTIoN
CREASED, SILVER, COPPER AND LEAD INCREASED.
'estern Newspaper Union News Service.


Washington.-The output Of Colora-
do mines during 1918, according to
Charles w. Henderson of the United
States Geological Survey, was $1S, 146,-
DIG in gold, 9,325,255 ounces Of silver,
S7,620,364 pounds OF lead; 7,29s.269
pounds of copper, and 119,34G,429
pounds of zinc Tin terms of spelter and
zinc in zinc oXide), with total gross
value of recovered metals of $35,449.-
29s, as compared with $37,320,966 in
1912, a decrease in value for 1913 OF
$1.s71. .66s. or 8 per cent. There was
a decrease Of $441,G46 in gold, an IN
crease of 1,113,1S5 ounces of silver, an
increase of 12,37s,097 pounds of lead.
an increase of 1896 pounds of cop
per, and decrease of 12,S76,3S3
pounds of zinc. The heaviest decrease
in value was $2,439.974 for zinc, but
there were increases OF $685.. 2.031 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 otlier states, inncluding a
from Kansas and Oklahoma zinc smell
ters. showed small increase for the
year. An increased tonnage from Col
orado was shipped to the Garfield.
Midvale. and Murray plants in Utah.
Cyaaide 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
rado, 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-
tion plant, at Canon City, both treat
ing chiefly Leadville lead-zinc ores.
The Sutton, Steele and Steele dry con-
centration and static electric separa-
tion plant was operated throughout
the year on many tests lots and later
on custom ore purchased from various
districts in TIE state.
Cripple Creek produced GO per cent
of the total gold yield of the state,
with a yield of s10,905,003 as com
pared with s11,00S,3G2 in 1912. The
output for IL months from Cripple
Creek seemed to indicate a production
for ~ months of s11, 1874, 900, but the
severe storm of December 4th so Grip
pied transportation facilities that the
December yield fell off heavily. There
was an increased yield of gold bullion
from custom cyanidation plants at
Colorado Springs and from the cyan
idation mills in the district, the de-
creased yield being due to decreased
tonnage of smelling ore. The Roose-
welt tunnel continued to lower the va
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
wer operated steadily. The Portland.
Stratton's Independence, Ajax, and
several other cyanidation plants in
the district were operated continu-
ously. The Standard chlorinatiop and
cyanidation plant at Colorado City
was idle, but the Union cyanidation
plant, at Florence, was operated part
of the year on old tailings. The pub
lie report of the Portland company for
1913 shows n total of 17S,162 tons of
an average assay value of s2.95 per
ton was treated at the Portland COM
pany's Victor mill, with satisfactory
net earnings. The Stratton's Inde-
pendence report shows recovery or
7S.iS per cent on ore averaging S3.07G
per ton, the cost of working the mill
being STAG per ton.
Lake county (chiefly Leadville, but
for 1913 including the new Lacka-
wanna district. in addition to Big En-
glish gulch and Sugar Loaf districtsD
produced s1.023,G31 in gold, 3,400,31S
ounces of silver (Which represents &c
per cent of the state yield. 1,923,9ST