The Raymer enterprise., 1913-01-23
METALS IN COLORADO
cHAs. W. HENDERSON COMPLIES
FIGURES ON 1912 PRODUCTION.
Large Increase in Zinc, Lead and Silver
Output, But Decreases In Copper
and Gold.

| Western Newspaper Union News Service,
Washington.-The output Of Colora
DO mines for eleven months OF l9l.
ind N estimate for December, accord
ing to preliminary figures by Charles
W. Henderson, Of the United State!
Geological Survey. shows a decrease
Of 100000 for gold. an increase o
$50. 900 ounces for silver, a decrease o
100000 pounds for copper, an in
crease OF 100000 pounds for lead. ant
an increase OF 100000 pounds TO-
an increase Of 100000 pounds
for zinc. With increased mar
ket prices for silver. copper, and zinc
the value OF the output in 1912 wa
over ;4,000000 greater than in l9ll-
100000 in zinc and $l.000,000 in sill
yer, the increased value for lead ant
copper about balancing the decrease
for gold. The output for 1912 is there
fore estimated at approximately SIS,
100000 in gold, S,OS0,OO0 fine ounces o
silver, 7,O25,000 pounds Of copper, "A.
Cs0.Ooq pounds OF lead. and 12l, .oO'
pounds OF zinc, valued in all at nearly
| s3G,5OO,OOO
The tonnage treated by the Globe
Leadville. Pueblo, Durango, and Sail
da smelters showed an increase fo
the year. Ore was also shipped to tn
Murray, Garfield and Mldvale plant.
In Utah. An increased tonnage OF com
pcX zinc ere and concentrates from
| Colorado and other Western statei
was treated at the United States Zin'
Co.'S plant at Pueblo.
The output OF Cripple Greek showet
an increase OF 100000 In gold Early
in 1912 the drainage BY the Roosevelt
tunnel had lowered the water in many
of the large properties Except ,ht
Golden Cycle and Vindicator mines,
SO than an additional 100 feet In deptt
could be worked. and an increased ton
mage was mined during the year.
Despite the closing OF the STANDARD
custom chlorination plant at the en-,
OF the year 1911, leaving In the Gus
tom-milling field at Colorado Springs
only the Golden Cycle and Portland
mills, the total yield from the golc
mills showed an increase for the year
The Portland plant during 19ll-i2 hat
been gradually transformed to cyan
ide mill; thus cyanidation In 1912 hac
completely superseded the use o
chlorination in the treatment OF Grip
pie Creek ores. The Colorado cyanide
plant at Colorado Springs and the Tn
ion plant at Florence continued opera
tons on old taillngs. The Stratton'i
Independence nide.concentratioi
mill and the Portland cyanide.clncen
tration plant, both at Victor. continued
to treat from 10000 to 1l,O0O tons :
month each of dump and low.grad'
mine ore. The Ajax cyanide plant, us
ing the Clancy process, was operated
part of the year Several Of the small
er cyanide plants In the Cripple Creei
district were operated with an in
creased output from this source. Al
increased tonnage OF the higher,grad
ores was shipped direct to smelters.
The tonnage shipped from LAX
county Chiefly Leadville) showed al
increase. with gains IN output OF al
the metals except copper. The outpu
of zinc was approximately $4,000 90
pounds, representing an increase o
100000 pounds In quantity and s.
C00.o00 in value. The output OF zin
carbonate was $4,000 tons of approx
imately 80 per cent zinc. against SO
905 tons OF 81 per cent zinc In 1911
The zinc sulphide shipped decrease,
somewhat from the 1886 tons OF 90.
per cent. ore shipped In 1911. How
ever. the Empire Zinc Co.'S magnetic
separation plant with an increase
4 ,onarityl NJ Canaan ci,v anJ IA