The state herald., 1915-12-31
COLORADO METALS
MINE PRODUCTION IN 1915 SHOWS
INCREASED OUTPUT IN MOST
METALS.
With the Increased Average Value Of
Metals, with the Exception Of
Silver, the Net Increase In
Value 10 Nearly
&10,0oo,oo0.

SOiC1SoO metals lot eleven months OF
1915 with an estimate for December,
from data compiled by Charles w.
Henderson. Of the United States Geo
logical Survey, indicates a yield for
the year of $22.33O.OO0 In gold. T..
oso.0oo ounces Of silver. 66.664, 900
pounds Of lead Tin terms of lead in
lead bullion and lead in leaded.zinc
oxide), 100000 pounds Of copper.
and 1o0.000.000 pounds Of zinc Tin
terms Of spelter and zinc in zinc OK.
ide). with total value Of $43, 100, 900
compared with $1s.sS3.l05 in gold,
a.7s6,o65 ounces Of silver. 74.211, 1893
pounds OF lead. 6,63s.173 pounds OF
copper. and 9G.774.960 pounds of zinc.
with . total value of $33. 3.460,126, in
1914. This shows an increase Of $2,.
<47,0oo In gold. decreases of 1,716,00
ounces Of silver. and 7.550. 900 pounds
Of lead. an increase OF 100000 pounds
Of copper, and 100000 pounds Of
sinc. With the increased average
value Of metals. except silver, the
values show decrease OF s1.3SO. 900
for SILVER, an increase OF 100000 for
lead, an increase Of $4,000 for COP
per. and an increase of $s,065.000 for
zinc.
Tho tonnage treated by the Globe,
Lsadville. Pueblo. Durango and Salida
smeiters was approximately the same
a. In 1914. Increased shipments OF
copper ore we're made from Rico to
plants In Utan and copper matte was
shipped from Ouray to Utah. Cyanide
precipitates and copper ore were
shipped to Omaha. Some Rico ore
~as shipped 10 San Pedro, New Mex.
ico. The mating plant at ouray was
operated during the greater part Of
the year. The tonnage treated at the
United States Zinc Company's mag.
netic-wet concentration mill and smell
ter at Pueblo showed q heavy IN.
crease. The Western zinc oxide plant
at Leadville was placed in successful
operation in April and operated
throughout the year on Leadville zinc
carb0nates.
The gold output OF Cripple Creek
tTeller County,. was sl3.539.245, an
increase Of sl.543.129. The yield was
afso $5o7,32S larger than the 1908
yield. which was the largest yearly
output since 1906. Cripple Creek. to
the end of 1915 has produced s272..
$4,000. The Roosevelt tunnel con.
tinuod to lower the water In the
mines, except in the Vindicator.
Golden Cycle, whore electric pumps
are used. Several shafts were extend.
ed TO the depth OF 1900 to 1000 feet.
Work on the extension Of the tunnel.
stopped November 4. 1914. when the
RI Paso plant was destroyed by fire
WAS resumed March 2. 1915. the tun.
mel then being l7.127 feet long. To
ward the end OF the year the tunnel
vss approaching the Elkton property
and the flow was In excess Of $4,000
gallons per minute.
The Golden Cycle cyanidatiou mill
at Colorado City and the Portland
cyantdation mills at Colorado Springs
end Victor were operated steadily
With an increased output Tho STRAIT.
in the sale OF the mine to the Port.
land Company. The Union cyanida.
eion plant nj Florence was Idle and
the smaller plants In the district were
not a. actively worked us heretofore.
Tho tonnage OF smelling ore increased
appreciably. The discovery OF body
Of exceptionally high grade ore In the
Cresson mine IN December. 1914. re.
suited In greatly Increased output OF
the district for the first quarter OF
the year 1918.
Lake County. chiefly from Lcadville.
but also including the Lackawanna
0uloh and ST. Kevin lode districts and
the Arkansas River dredge district.
produced s2.25i 900 In gold. 2.GC0, 900
ounces OF silver. 20.o00.000 pounds OF
lead. 100000 pounds OF copper. and
1000. 900 pounds OF zinc. with total
value OF sii.ooo.ooo. against n.57i..
tSi In gold. 3.si0.s3o ounces OF silver.
3G.7st,Gi5 pounds OF lead. 2,3s2.si0
pounds OF copper. 7s.7G3.33t pounds OF
zinc. with u total value OF s9.0b7 .297
In 1914. Metallic gold was shipped
during the year from the Ibcx anl
Third Venture mines. The output OF
zinc carbonate was 10000 tons OF %
pcr cont zinc. against iia,ssi tons OF
,t.s per cent In 1914. The zinc sui.
phidc smelling ore and concentrating
ore combined was I35.00o tons OF ~
per cent zinc. as compared with Ill.
Dat tons Of a.: per cent sinc In 1914.
Operations were resumed In April at
tho bo.ton zinc oxide plant. and II was
operated successfully during tho year
on sinc carbonate ores OF 10 pcr cent
or less. Tho PlnErcc fiotation plant
was operated on xinc.lead sulphido
oYes from Lradviile and Rod Cliff
Tho water In tho downtown mines
vas lowered by electric pumps TO near.
" TOO fcct at tho Pcnrose shaft. Tho
Derry Ranch dredg.. below MALTA. be.
gan operations In October and from
-. ..E A. a