The Goldfield news and weekly tribune. [volume] (Goldfield, Nev.) 1911-1947, 1915-04-03
new MINING ERA
FOR ROCHESTER
REDUCTION WORKS ARE NOW
OPERATING-BIG TUNNEL
PLANNED

Rochester started on its new era
of life as a mining camp today when
at Z o'clock the $150,000 reduction
plant began operation on ore from
the Codd and Big Four leases.
A. A. Codd, who came in from
Rochester, said he believed the mill
would prove capable of handling
more than its rated 100 tons of ore
every "a hours. 1t was tried out
yesterday for a few hours and full
filed all the expectations of the
builders.
1t is estimated that the proper
ties at Rochester have 10000 tons
of ore blocked out, waiting for the
mill. OF this amount the Codd lease
alone has $4,000 tons. Through its
new transportation tunnel, built in
conjunction with the Big Four lease,
it has cut IL to IA feet of ore on
the 61O level and it has the privi-
lege of mining to a depth OF 100 feet
below that point. The Codd lease
has contracts calling for the milling
of at east 40 tons OF ore daily for
the next ten months and during that
time it is expected that 100000 tons
of ore in addition to that milled will
be laid on the dump for milling
at a later date.
l.. A. Friedman, who a large in
terests in the parent company, the
Rochester Mines company, and who
has beer the moving spirit in bring
ing about the new era in Rochester
has announced positively, Mr.. Codd
eays, that within a few days time
a tunnel of 5000 feet will be started
at the base of Nenzel hill to cut the
main vein at a depth of LOO feet.
In addition to the big investment
in the mill and equipment there is
IN investment of $250,000 in the
new power line from Lahontan. This
was constructed by the Nevada Val
ley Power company to which a long
case on the power plant was
granted by the government on fav-
orabe vote of the Truckee-Carson
project water users. There is an in
vestment of $4,000 in the Codd
railroad, the Nevada Short Line, and
ar investment by the parent COM
rany of $4,000 in a tramway that Is
now delivering ore to the mill by
gravity.
The new mill has ten stamps
weighing 1850 pounds each or a
third more than the ordinary stamps
and in addition there are two tube
mills and a series of ten cyanide
tanks. The all shines process of
treatment is used. The ore proves
very amenable to handling, crush
ing readily. 1t is rendered to such
hneness that it will pass through a
200 mesh screen. In the stamp mill
and in the tube mills, the ore is un.
der the influence of the cyanide So
tuition. In the first five tanks it is
further agitated to insure liberation
of all the %valuables into the solu-
ticn and in the last five the decanta-
ton process is used until from the
last tank the solution m off clear
to flow over zinc shavings for pre-
cipation of precious metal contained.
Water for the mill is brought from
Weaver canyon and is proving more
than needed.
ut is expected that the ore mill
ed will average SIS a ton" said Mr..
Codd. "With the increase in depth,
the, ore has widened out. At our
lowest level, ten feet of it averages
$3.50 a ton. All dead work has
been done and. all work henceforth
in the Codd lease will be in ore.
The ore reserves and possibilities at
Rochester are such as to fully JUS
tifv the consideration now being Civ.
en- by the parent company to the
question of doubling the capacity OF
the new mill that started today. Thu