Gilpin observer., 1909-12-30

eliminating dependence upon aux
iliary treatment elsewhere, a COM
plete series of tests involving ANAL
gamation, concentration and cyanida.
tion was conducted. The results show
without any complex or intricate
methods or machinery, the ores were
quite amenable to treatment, con-
trary to the general idea previously
held, that they were refractory, and
that a maximum recovery could be
made at the present cost of milling
and marketing, at the same time
yielding the producer from 10 to 35
per cent more than it had been pos
sible for him to obtain heretofore,
and in some cases even more than
the amounts quoted. Tests involving
the treatment in tonnage lots Of con-
centrates, crude ore, tailings, etc.,
were made at the Fifty mill and the
-
tracted. Still later, when all the data
was collected, the results were shown
to independent engineers in charge
of operations in this state and else
where and their unanimous verdict
was that the ores were unusually
amenable to treatment according to
the outlined methods.
Those familiar with mining opera,
tions in this county are best equip
ped for judging how much ore would
be available for treatment with the
proposed plant in operation, especial
ly in the light of the advancement
, of the Newhouse tunnel under some
of the previous large producers of
I the county. 1t is interesting to note
/ in this connection that some ten Of
the principal operators of the coul-
/ ty have predicted that their mines
alone would be able to furnish a tom
mage of 1,500 tons daily. 1t is axioma-
tic that low-grade ores will not stand
high transportation or treatment
charges, the only solution of the diff
ficulty is local treatment; this diff
Guilty will be obviated for all time by
the proposed mill. Local treatment
solved the problem for Cripple Creek
and many other camps and it is con-
sidered that the same condition
exists as in Cripple Creek before the
installation of custom mills, which
were capable of saving the values
at a less cost than the smelter
charges.
1t is well known that this county
has far more development than the
ordinary mining camp and that on
this account many of the older mines
which have long levels driven and
much other extensive development
could resume operations at once on
the lower grades of ore, which were
necessarily left therein on account of
the former high treatment charges
and ineffeciency of the mills In order
to make a more complete recovery of
the values in the ores, it will be
necessary to embody in this plant all
the latest improved practices. The
various engineers who have reported
on the merits and feasibility of the
enterprise recommend that modern,
automatic sampling plant be built in
connection with the mill proper, and
that the ores be purchased outright.
In view Of the present production of
4 A. f....
Of the plant its initial capacity will
not be less than 300 tons daily. When
the present mine operator considers
that under existing conditions an un-
his ores is returned to him It Is
thought that the proposed plan OF
buying the ore outright will strongly
, appeal to him.
Many details OF construction and
various estimates are being taken up
at the present time, after which It is
proposed to present the matter along
the lines Of more or less co-opera-
tive milling company in order that
the local producer may be able to
apply his milling profits proper
against his operating costs.
This new enterprise ought to re-
ceive every encouragement. These
men realize the enormous amount Of
ore to be had in this section. That
one thing alone has been the motive
for the experiments so successfully
terminated. They undoubtedly have
: the whole matter we'll in hand and
will soon show results.