The Arvada enterprise., 1915-12-23
COLORADO METALS
MINE PRODUCTION IN 1915 SHOWS
INCREASED OUTPUT IN MOST
METALS.
with die Increased Average Value Of
Metals, with the Exception of
Silver, the Net Increase in
Value Is Nearly
$1o,Co0.ooo.

Colorado metals for eleven months of
I3lo, with an estimate for December,
from data compiled by Charles w.
Henderson, of the United States Geo.
logical Survey. indicates yield for
the year of S22.&&o.OoO in gold, l.
ONooOO ounces of silver, 6G,6G4 goo
pounds of lead Gin terms of lead in
lead bullion and lead in loaded zinc
OXIDE, 100000 pounds of copper,
and l0O,0oO.0OO pounds of zinc Tin
terms of spelter and zinc in zinc on
idel, with a total value of si3,10o.0o0
compared with Sl9,SS2 .1O5 in gold,
N,,9GWG5 ounces of silver, Ii,2l SOS
pounds of lead, G.G$9,l1& pounds OF
copper, and 96,IIi,9GO pounds OF zinc,
with total value of $50, iGo,l26 in
1911. This shows an increase of 81,
$4,000 in golI, decreases OF 1,7l6,0oo
ounces OF silver. and 7,550,OO0 pounds
of lead, an increase of 100000 pounds
of copper. and 100000 pounds Of
zinc. With the increased average
value Of m2tl-s, except silver the
values show a decrease of Sl,2SO ,OOO
lead. an increase OF $4,000 for cop
per, ana an increase OF $S.OG5 900 for
zinc
The tonmaa- treated by the Globe,
Leadyille, Pueblo, Durango and Salida
smolters was approximately the same
rs in 1911. decreased shipments of
| copper ore rGre made from Rico 10
| plants in Uta: and copper matte was
shipped frore Ouray 10 Utah. Cyanide
precipitates ls-i copper ore were
shipped to Omaha. Some Rico ore
was shipped 10 San Fadro. Rev Mex.
| leo. The mating plF,nt al C1ray was
operated during the S-cater part OF
| the year. The tonnage treated at the
| United States Zinc tompany's mag
netic-wet concentration mill and smell
ter at Pueblo showed heavy n.
crease. The Western zinc oxide plant
at Leadville was placed in successful
operation in April and operated
| throughout the year on Lcadville zinc
Carbonatcs.
The gold output Of Cripple Creek
- J
increase of sl,5I&l29. The yield was
also s5O7,32S larger than the 1908
| yield. which was the largest yearly
output since 1906. Cripple Creek, to
| the end of 1915 has produced $272,
|2G.o 900 The Roosevelt tunnel con
| tinucd TO lower the water in the
mines, except in the indicator
| Golden Cycle, where 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 I. 1917. when the
| FL Paso plant was destroyed by fire
was resumed March >, 1918, the tun.
mel then being l7l27 feet long. To
ward the end of the yea" the tunnel
was approaching the Elkton property
and the flow was in excess Of lS,Ooo
gallons 1cr minute.
The Golden Cycle cyanidation mill
at Colorado city and ,hc Portland
cyanidat' On mills at Colorado Springs
md Victor woT" operated steadily
/ with an 'ncr"dnra output The STRAIT
toms Independence mill was included
in the sale OF the mine TO the Port
land Company The Union cyanida.
ton plant II ElorouC" was idle and
the smaller plants in IN" district were
not as actively worked as heretofore.
The tonnage of smelling ore increased
apprcCiahly The discovery Of boGy
Of exceptionally high grade ore in tn"
Crcsson mine In December. 1914. re-
suited In greatly increased output Of
the district ior the first quarter Of
the year 1919.
Lake County, chiefly from Loadville,
but also mclldiuF the LaCknwamua
Gulch and St Kelvin lode districts and
the Arkansas River dr"dgc district.
produced S-,2Gl .UOJ IN gold. 1900, 400
ounces ol silver, so,o00,o"0 pounds Of
lead, lNiuunp pounds OF copper, and
1000. goo pounds of zinc. with u total
value of 5 lnpuuOu, against Sl,51l..
I5I I'm gold aNluN3r ounces Of silver,
2G.ISLCl5 pounds Of lend. 2,3s2,olo
pounde Of copper. 5s,5Di,81i pounds Of
zinc. with total value of sa,0jG23i
In 1911 Nurullic gold was ahIpprl
during the wear from the lhmN an !
THIRD Venture mines The Output ~
zinc carbonate was $4,000 tons OF 30
per cent aur. against ll2sNI tons OF
les per cont 10 l0ll Tho zinc u'
ag" combined uw lE5,nru tons Of -
per cent zinc. %. compared with M.
I1i7 tons u. .I2 per cont zinc in l1ll