The Hardin tribune-herald. [volume] (Hardin, Mont.) 1925-1973, 1934-01-05
NEW TYPE OF ORE
MILL BEING USED
UNUSUAL TYPE OF MACHINERY
IN USE BY FIRM OPERATING
IN MONTANA

A quartz mill without q crusher,
something that las been regarded as
impractical in mining circles, IS de-
scribed in the current bulletin Of the
Montana Stock and Bond company
by Carl ]. Trauerman, mining engi-
neer. This mill is located on the
properties of the Mount Gable Gold
Mining company, a Butte-controleo
organization, whose properties are
known as the Hidden Lake, near An
aconda.
The ore, it is explained, is limestone
gangue. It is drilled with augers ana
blasted with small charges OF power.
The ore breaks fine and is sticky. II
gums up the ordinary crusher. The ore
Is accordingly passed over a grlzzley seS
fat with one-inch openings. The
larger Jumps are either pressed through
or discarded as lacking in value. The
undersize from the grizzley is put IN
teaching tanks. A cyanide solution I'M
der five pounds pressure Is forced
through the mass for three days, dur
ing which time about three tons OF ore
are fed through. Wash water is forced
through under about the same pressure,
but the tanks are bottom sluiced to the
tailings pond. The solution is drawn
off the top of the tanks and filtered and
fed to zinc boxes which are cleaned
twice a month. The zinc precipitates
are acid treated and melted into oul-
lion which runs about 900 fine gold.
The bulletin calls attention to the
fact that under the direction OF Or.
Francis A. Thomson. president OF the
Montana School of Mines and director
of the Montana Bureau OF Mines n
Geology, the bureau has published a
memoir entitled "a Geologician Re
connoissance of the Tobacco Root
Mountains, Madison County, Montana
by Wilfred Tansley of the University
of Chicago, Prof. Paul A. Schafer OF
the Montana School of Mines staff and
LYMAN H. Hart of the geological staff
of the Anaconda Copper Mining COM
pany.
memoir on Some Gold Deposits OF
Broadwater, Beaverhead, Phillips and
Fergus Counties, Montana" by Andrew
v. CORY. Both of these booklets con-
tain plates, maps, illustrations and de-
tails. They may be obtained 1or ID
cents each-the mailing cost-from the
Montana Bureau of Mines and Geology,
Butte.
Announcement is made that Allan
Ryan O1 Illc 1dec AAioA
Fortune Ryan, and J. A. Burden, Jr.,
president of the Burden Iron company,
who came to Butte a few weeks ago IN
company with Walter P. Jacobs, mining
engineer and president Of the Bery!-
lium Company Of America, ION a duck
hunting trip" have become financially
Interested in the Basin-Montana Tun-
mel company and have been elected
members of the board of trustees. With
them came also Fred S. Allen OF the
New York Stock Exchange firm OF APP
penzeller, Allen & Hill. "
Basin-Montana Tunnel company 1t
is stated, controls a mineral estate Of
some 125 claims, about 1000 acres, on
the west flank of High Ore gulch, on
what is known as Comstock hill, about
two miles east of Basin. The holdings
include the Grey Eagle mine, with past
production record of about S2,0OO;O00
and the Comet mine, with past produc-
ton of $13, OOO, 900. These mines are
near the northern and eastern limits
Of the company's properties, which COW
er a territory south of these points for
q distance of over three miles and cross
the tracks of the Butte division OF the
Great Northern railway. Both the Grey
Eagle and Comet mines are now IN
operation, -.