Gilpin observer., 1918-01-17
The Golden Cycle cyanidation mill.

The Golden Cycle cyanidation mill.
1t Colorado City, and the Portland
cyanidation mill. at Colorado Springs
and Victor. were operated steadily.
The yield from the small cyanide
plants of the Cripple Creek district
was not SO large as usual and the ship
ments of smelling ore directly to
smelters fell off considerably.
Lake County. chiefly Leadville. but
including also tho Lackawanna Gulch.
Sugar Loaf. st. Kevin and the Wort
man lode districts and the Arkansas
River dredge district. produced ST.
20S,000 in gold, 2,240,0O0 ounces of
silver, 20,000,000 pounds of lead, g.
$4,000 pounds of copper, and 59,50O,-
600 pounds of zinc. having total
value of s10,700,000, against $1,72O,.
440 in gold, 1881, ,2S1 ounces of silver,
2,621,675 pounds of copper, 21,719,392
pounds of lead, and 76,7S5,567 pounds
OF zinc, having a total value Of $16,-
OS2.059, in 1916. Shipments of man.
ganese-lron ore, manganese-silver
fluxing ore, lead carbonate, and zinc
carbonate ores continued in increas-
ing quantities from the Downtown dis
trict, unwatered in 1916. Some zinc
carbonate and zinc sulphide ores were
shipped from the Fryer Hill district,
also unwatered in 1916, and consider
able iron-sulphide ores were shipped
from the unwatered Carbonate Hill
district. The output of zinc carbon
ate from the Leadville district de-
creased heavily. The output Of zinc
carbonate was 6S,500 tons of 1876 per
cent, as compared with S5,513 tons
of 21.52 per cent. in 1916. The zinc
sulphide smelling and concentrating
ore was 10000 tons of 21.7 per cent,
against 147,295 tons of 20.96 per cent
in 1916. The Derry Ranch dredge, be-
low Malta, continued operations dur
ing the year.
The San Juan region of Dolores,
La Plata, Ouray, San Juan and San
Miguel counties produced $2,5SS,00O in
gold, 2.556,000 ounces of silver. 20,-
$4,000 pounds of lead, 3,745O0O
pounds of copper and 100000 pounds
of zinc, valued in all at $S,1O0,0OO
against s3,O41,275 in gold, 2,224,311
ounces of silver, 16,345,76S pounds Of
lead, 3,072,199 pounds of copper, and
5,364, ,2O9 pounds of zinc, with total
value Of $7,107,294 in 1916. The San
Miguel County mills maintained their
production of gold, which was about
$2,000,000, and increased their produc-
tion of silver to over 1000 900 ounces,
but considerable quantities of the ore
treated in these mills came from oper-
ations in Ouray county along the
strike of the veins.
Boulder, Gilpin and Clear Creek
counties produced $S0S,O00 in gold,
956,000 ounces of silver, 1,240,000
pounds of copper, 6,336,O0O pounds of
lead, and 100000 pounds Of zinc, as
compared with $1,0O1,4S9 in gold,
SS1,51S ounces of silver, 1,243,756
pounds Of copper, 5.6s1,Ss2 pounds OF
lead and 2,572,575 pounds Of zinc in
1916. Boulder county produced $780,
900 less gold and 10000 less silver,
also less copper and lead. Clear Creek
county increased its output Of silver,
lead, copper and zinc, but decreased
considerably its output Of gold. The
production of gold in Gilpin county
there was an increase in the output
of lead, and for the first time in years
there was an output Of zinc.
In Chaffee county the output of
gold, lead, copper and zinc fell off,
but the output Of silver increased.
The output of Pitkin county (Aspen)
was $4,000 ounces of silver and 49,
633.000 pounds of lead, an increase of
II 900 ounces of silver, but decrease
of nearly 1900, 900 pounds Of lead. The
output Of zinc from this county. how
ever, increased approximately 3o0.-
900 pounds.
The production Of Creede (Mineral
county, fell off considerably, as did
that of Gunnison county.
Mining was very active at Red Cliff,
Eagle county, though the yield of
zinc was somewhat less than in 1916.
Some shipments were made from the
Brush Creek district.
The output from both lode and plac-
er mines in Park county decreased.
Summit county produced s623,O00 in
gold, 1890 ounces of silver, 1000
pounds of lead, 10000 pounds of cop
per, and 100000 pounds of zinc, as
compared with $673,891 in gold, 120,-
207 ounces of silver, 1851 pounds of
copper, 1,6SS,637 pounds of lead, and
13,940,94S pounds of zinc in 1916.
The output from the mines OF Gus
ter county was the largest for several
years, and there was also a consider
ably increased production from the
Kerber Creek district OF Saguache
county.