Pueblo chieftain., 1921-01-06
COLORADO METAL MINING In 1920

From u S. Geological Survey Department of the Interior
Despite curtaiment of operations in November and
December in many mining districts Of coorado the pro
o of he ass sooea
Of 1 the was was ounces of
eopper and pounds Of zinc as With
pounds Of lead ssios75 pounds Of copper and 5a4s.
4ss pounds of zinc in 1919 These fsure show @ dc
and for zinc Of but an increase @ OF
The increase n output lead copper and the
OF the production to SO cent Of that
companys 5ooton floation mill
n $40 ana continued e the
producing both lead and zinc concentrate
and Lesdvilia operated steadily from colo
slightly increased capacity over that of the closing days
The salda smelter closed in February but
before that date The zinc oxde plant at Leadvie
AS result of reorganization assuring steady sup
ply of zinc carbonate ores from tho downtown mines
block of furnaces completed in August but The
block not placed in % operation because OF the
at Canon city operated until in December on
zinc carbonate ores from leadvle and from camps IN
ed and set in operation as trial "a very m0a9rn rn ha
con,panys magnetic separation plant which has been
successfully operated for years on Lsadvie zinc
panys plant the treatment of lowsrade
The Cripple creek gold dsrs t ss ns in Tes5 na tS
changing value of gold but produced s40ooo0o as COM
Mining at Leadvilie where variety metals are
produced at low ebb at the end OF 1919 but orc
shipments during 1890 and four furnaces were
operated the sneter for the greater part of the
yeq the on was pe n
General Chemical companys suphuric acid plant a.
plants oxide plants Some mansansse
aw a%e s in May
enforced idieness during the winter and was
with its lead carbonate and zinc and
100 cent and the dredses produced
$3.50. 900 in gold compared with $4,000 in 1919
poss at Red Cliff. sulphido milling ore was
ehippsd eho !" ha IrGe ead ns Sap Leadse
at Aspen Pitkin county, maintained a a
The lower levels a, the smusssr a
ore Lenado near Aspen. considerable
orc shipped during the year
ms. , hdi and nanr sethacks by fire and
snowsiides began milling early in 1920 large quantity
zinc Tho Iowa-Tiser mine at Silver
San Miguel county maintained its usual production
e ssF n on npe4aon shs its the TON
Tho SmuEsler Union continued operations and develop
which unfortunately destroyed by fire but is now
ns BY Mill WHICH or @ it's
successfully 1896. with shutdown in tho winter
The wagner regular operations at its
@ s as s % uns m an%
Though not actively in tho last few years min
Camp company continued DEVELOPMENT from its
a which in , had cut the ysn 500 feet eeSM ,hG
county did not produce as much as in 1912 but some
were made Lake City.
Clear Creek countys production less than usual
the Colorado Central MILL at Georgetown large
producer concentrates from old dumps clos
ed. Silver Plume. however,
operation during the yielding lead and zinc
eentra,es The Gem mines at Idaho Springs
ad with the acquisition of ad
acent property Gpin countys yield from the Argo
cos'nE 1919 of the
Arso mill fremont mines but there consider
and production at several mines
al Gulch. Black Hawk Central City and Apex.
Custery county silver mines continued production at
several properties that had been revived in 1915 and
1919. Drilling of placer Fairplay, Park
county. resulted tho digging of pit for tho in
stallaton o. a dredge.