The Colorado statesman., 1914-07-18
COLORADO METAL PRODUCTIONIN191
TOTAL OUTPUT
CREASED, BUT SILVER, COPPER INCREASED.
Ne.tern Mewspaper Union News servlce


Washington.-Th output of Colora-
do mines during 1913, according to
Charles w. Henderson of the United
States Geological Survey, was $1S,146,-
916 in gold, 9,325,255 ounces of silver,
S7,620,364 pounds of lead; 1926, S,269
pounds of copper, and 119,346,429
pounds of zinc Tin terms of spelter and
zinc in zinc oXide), with a total gross
value of recovered metals of S35,449,-
29S. as compared with $37,320,966 in
1912, decrease in value for 1918 of
$1,S71,66s, or per cent. There was
a decrease of s411, GAG 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 a decrease of 12,S76,3S3
pounds of zinc. The heaviest decrease
in value was s2,439,974 for zinc, but
there were increases of $5S2 ,031 for sill
yer and S469,394 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, inncluding
considerable tonnage of zinc residues
from Kansas and Oklahoma zinc smell
ters, showed a small increase for the
year. An increased tonnage from Col
orado was shipped to the Garfield.
Midvale. and Murray plants in Utah.
Cya:.ide 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 Companys 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 $1O,9O5,OO3, as com
pared with $11,OOS,362 in 1912. The
output for IL months from Cripple
Creek seemed to indicate production
for II months of $11,1S4,OO0, 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
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
wer operated steadily The Portland,
Stratton's independence, Ajax, and
several other cyanidation plants in
the district were operated continu-
ously. The Standard chlorination and
~ DllHI hJ ClCy
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 1882 tons of
an average assay value of $295 per
ton was treated at the Portland COM
pany's Victor mill, with satisfactory
net earnings. The Stratton's Inde-
pendence report shows a recovery or
7S.4S per cent on ore averaging $3.O7G
per ton, the cost of working the mill
being $1.46 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 dstricts)
produced $1,023,G31 in gold, 3,4O0,318
ounces of silver (Which represents SO
per cent of the state yield, 1929