The Idaho Springs siftings-news., 1916-12-29

against $2.246,152 in gold. 2.571.002
ounces Of silver. 1o.s57.404 pounds OF
lead. 1.s03.423 pounds of copper. and
72.493.l7s pounds Of zinc. with total
value OF S13.S3s. .401 IN 1915. The sew
eral ambitio,ls drainage operations by
pumping already have resulted in ship
ments Of manganese-silver ore from
the downtown district. and Of zinc car
Donate from the Fryer Hill district.
and the Carbonate hill drainage will
unwater zinc sulphide ores already
partly developed. The output Of zinc
carbonate was 100000 tons Of Els per
cent. against 1882 tons OF 22.48 per
cent In 1915. The zinc sulphide smelt-
ing and concentrating ore was 115.000
tons Of 21 per cent, as compared with
136.655 tons of 22.os per cent In 1915.
The Derry Ranch dredge. below Malta,
continued operations during the year.
The San Juan region OF Dolores. La
Plata. Ouray. San Juan and San Mig
uel counties, produced 100000 in
gold. 100000 ounces of silver. 10000
600 pounds Of lead, 100000 pounds OF
copper. and 100000 pounds of zinc.
valued in all at $6.9OO.000. against $3.-
S34,521 in gold, 2,278.201 ounces Of sill
yer. 14.314,363 pounds Of lead. 3.517. .462
pounds Of copper, and 1.3S2.334 pounds
Of zinc. having a total value Of $6.21o.-
4s4 In 1915. San Miguel county main
tanned its yield Of over $4,000. 900 gold
and 100000 ounces of silver: the
yield Of lead in Dolores county in
creased but the output Of the other
metals decreased. San Juan county
produced less gold but made gains In
the yield of all the other metals. La
Plata county's gold and silver yield
decreased considerably. The heaviest
decrease ($722.000 for gold, 10000
ounces Of silver and $4,000 pounds of
copper) naturally was shown in Ouray
county, where the Camp Bird mine
and mill were closed down In August
to await the completion of the low
level adit 10.700 feet long. which will
cut the Camp Bird $50 feet below the
present deepest workings and 800 feet
below workings Of the next most i'm
portant section. The adit has been
driven several thousand feet in 1916.
but will not be completed for twenty
seven months from the time work on
1t was begun. The Wanakah copper
mating plant at Ouray, active in 1915.
was idle in 1916.
Boulder, Gilpin and Clear Creek
counties produced $1,0O0.000 in gold.
100000 ounces Of silver, 5.500.00O
pounds Of lead, 100000 pounds
of copper, and 2.500.000 pounds
Of zinc, as compared with $1,249.S94 in
gold, 790.065 ounces Of silver. 4.008. .744
pounds Of lead, 1.094,012 pounds Of
copper, and 1.51e.032 pounds Of zinc in
1915. Boulder county maintained its
1918 yield except for gold. there being
a decrease of $4,000 for that metal.
Clear Creek county's yield for all met
ais increased somewhat, and Gilpin
county maintained its 1915 yield.
Chaffee county's gold, silver and
lead output fell off. but its copper and
zinc yield increased. The Pitkin coun-
ty (Aspen) yield was $4,000 ounces
of silver, and 16.60o.00O pounds Of
lead, an increase OF 121 900 ounces of
silver. but a decrease Of 100000
pounds of lead.
The yield of Creede (Mineral coun-
ty) showed improvement over 1915, as
did also Gunnison and Hinsdale coun-
ties.
Summit county's production was
$660,0O0 in gold, 100000 ounces of sill
yer. 100000 pounds of lead, $4,000
pounds Of copper, and 10000 pounds of
zinc. as compared with $6S0,144 in
gold, 64,223 ounces of silver 1,916,29S
pounds of lead. and 8,5s7,411 pounds
OF zinc in 1915. The four dredges at
Breckenridge produced about the same
output as in 1915, and the shipments
of zinc from Breckenridge increased
heavily. There was a revival OF min
ing at Kokomo, Robinson and Monte
yuma.
Eagle county made the largest out
put since mining began at Red Cliff,
iii 1879. The output Of zinc was 29,-
100000 pounds, as against 11,141,75o
pounds in 1915. The Eagle NJ & M.
Co.'S magnetic separation wet concen-
tration mill was actively operated on
ore from the Iron Mask mine, and
large quantities Of zinc-lead ores were
shipped from the Black Iron mine. The
Brush creek silver district was also
active again
Lode mines in Park county made an
appreciably increased output, particu-
larry Of gold, but the placer output de-
creased somewhat The London mine.
at the head Of Mosquito creek, was the
principal producing property.
Custer county mines were more &C
tive than they had been for several
years, and with the commencement OF
shipments from the Rawley tunnel.
Saguache county's yield promises to