Bisbee daily review., 1908-09-12
CRESTON D'ORv
COMING OUT AS
A PRODUCER
Under Management Dawson
Company This "Has Been"
Mine Has Become a Money
Maker-New Equipment.
1By Chas. A. Dinsmore)

(By ClaS. A. OlnSmOre)
The Dawson Gold Mining and Mill
ing company is the title of the COM
pany now operating the old Crestop
d'Oro mine in the Oputo section OF
the Moctezuma mining district. be-
tween Douglas and Nacozari. This
company has had the holdings now
some months and an excellent show
ing has been made. To reach the
property one must so out on the Ma
cozari railroad to Calabazas station,
and from there go by wagon fifteen
miles up into the mountains and with
in a few miles of the Tabatacochi
properties. The Creston d'Oro is
about on the dividing line, one woald
Judge, separating the copper-silver
naturalization from the gold-sllyer,
the property under discussion carry
ing all values in the latter. but once
in a while there will be a distinct
copper stain, showing conuguity OF
this mineral zone.
The Dawson mine, under the guild
ance of H. l.. Roper of Ell Paso, has
emerged from an antigua lin other
words a has been") into a very
handsome little property. The work
at the mine has been under the man
agement of ID. ]. McCarty, e. NJ, and
the mine work was under superintend-
ence of Adolph Smith. both of these
gentlemen still handling the affairs
and both being old and competent
mining men. The PROPERTY is now
equipped with a free milling plant,
consisting of two crushers, Lane mill,
Whitley concentration, Pearce concen.
traitor, etc, below the mill being the
plate for amalgamation. Some 40 to
SIS per cent of the values have thus
been saved, the tailings being inn
pounded in the bed of an arroyo De
meath the plant, to be worked later IN
by cyanide.
Mr.. Roper, who just returned TIN
the east, stated 10 the writer yesttr
day that all financial arrangements
had been completed, and that no move
of the treasury stock was for sale
He also stated that a thirty-ton eva
hide plant is to be installed at the
property at once, and that w. c. West
formerls cyanide expert for the Dial
by people of FL Paso and the man
who built and successfully operated the
Republica cyanide plant at Ocampo
had been retained 10 construct this
new adjunct and run it after Ii is up
This means a new era in that partlcI
lar section. In the past always If the
ore wasn't big pay in a free state II
wasn't worth mining.
The entire personnel at the Dawson
mine being of mining men, it was but
natural that more attention would be
given the ore and treatment than Il
ordinarily the case. So every phase
was watched with not only the inter
est that always centers in the extrac
ton of the values from the ore, bui
also from the scientists standpoint
II was due TO this fact that an add
tional eTasiiisTT was recently put In, i
being the belief that the finer the
crushing the better service the Lane
mill would give. This has proven tbs
fact. Now, on the cyanide proposition
the present equipment will be utilized
and besides there is to be installed {
tube mill Thus, by the regular fret
metal amalgamation process all thu
values possible will be extracted, al
the balance of tn ematerial going Il
the tube mill TO be slimed and then /!
win go to the cyanide tanks. This i
the correct practice as demonstrates
wherever attempted In the past
was not so considered, and indeed ]
not SO much so with a gold ore, be
cause the quantity of mineral is no
usually in any SO large proportion a
the silver ores carry. But since tn
cyaniding of silver ores has been den
onstrated feasible, experts have teste
and worked, finally finding that # tn
entire material is slimed the cya.hd
will get the values. Throughout oil
Mexico the old processes are ral;idl
being superseded by this Shining an
cyaniding process, and invaTiaDl
the results are gratifying. Just no
operation at the Dawson is It questin
but there will be no unnecessary d
lay.
The machinery nov installed is fir
class in every particular, and dom
excellent work. There IS Hon
boiler connected up to 7x14 Brow
ell automatic engine. Water is serve
through a No. Cameron pump TO
a never-failing supply about IL mil
away. A new boiler is to be instas-
at once. Machinery foE sinking is
place.
The dumps on the property Cleft
the .1chIoriders'' who had the proper
wears agol have been found to ear
about So per ton, and the ores fro
these have been run through tie M
ing plant. producing a handsome su
in amalgam and concentrates Mea
while development has proceeded
the property. Many openings ma
been made and others EXTENDED, al
zA q e