The Salt Lake herald. [volume] (Salt Lake City [Utah]) 1870-1909, 1906-02-23
new GOLD MILL
FOR TA|L|NGS
Description of the Plant Going Into
Commission at Bamberger's
De Lamar Mines.
0DlN STRIKE PROVING BIG
sINBAD REGION, RICH IN GOLD,
ATTRACTS ATTENTION.

The new 600-ton taiIings mill of the
Bamberger-De Lamar company at De
Lamar, New, designed by Manager
Frank P. SwindIer, is now rapidly
nearing completion and will be ready
TO go into commission during the next
few weeks. The structure is located
on a gradually sloping hillside and
covers an area 108x176 feet, with the
equipment arranged on four floors.
This allows for the handling of all the
product by gravity and at a minimum
of cost. The tailings will be scraped
by means of wheel ScraperS to a small
hopper above the mixing box situated
on the side of the dump. A five-horse-
power motor supplies the power for
operating the mixer into which a
stream of diluted cyanide solution is
constantly delivered by a No. CEN
trifugal pump. The product from the
mixer, consisting of sands, shines and
solution, flows 300 feet through wood
en- launder to the separating and
teaching tanks on the upper level OF
the mill.
There are fifteen Of the above tanks
constructed of sheet-steel, having a
capacity Of sixty-f1ve tons of sand
The upper part of these tanks is riv-
eted cOne-shaped. The pulp enters
the cone and the shines and solution
overflow while the sands settle through
a neck to the sand vat directly below
After the tank is charged with tall
ings it is subjected to a short teaching,
followed by washings with a diluted
solution and water, tht final moisture
being drawn off by vacuum, after
which the sands are discharged
through from bottom discharge doors
into two-ton cars, arranged to run in
trains.
Shines Treated Twice.
The overflow from the separating
cone is distributed TO eight or twelve
slime tanks located on the next level
The slime tanks are of wood. sixteen
feet in diameter, eight feet vertical
slaves, with a fifty degree cone bot
tom. The overflow from these con-
sisting of clear solution, is taken off
continually by means of periphaiI
weirs and flows to a stump from
whence it is pumped back to the mixer
to again traverse the same journey,
thus being named the circulating So
luton.
The flow of the slime or clarifying
tanks is arranged so that they are
filled at successive peTiOds-whiIe one
is filling another is settling or being
washed or discharged
How Values Are Saved.
The shines are allowed to settle for
a short time and then the clear soIu-
tioR is decanted by means of a three
inch pipe to two gold-solution storage
tanks. thirty feet in diameter and eight
feet high, located on the third level.
After having decanted the clear sOlu-
ton the shines are washed with water
entering through from pipes near the
bottom Of the cone, and by means of a
hose agitating the shines from above.
Having completed the washing, they
are again settled and the wash water
is drained to the overflow stump, en-
tering the circulating solution and
taking the place of the solution orig
inally drawn off for precipitation, thus
keeping the volume of the circulating
solution constantly; the shines still be-
ing such a consistency that they flow
easily and are discharged through six
inch openings at the bottom Of the
tanks into launders conveying them to
the slime settling dam, where an addi-
tional amount of water is recovered
and returned to the mill.
Gold Storage Tanks.
Besides taking the gold bearing So
luton decanted from the slime Clarity
ing tanks the gold-storage tanks re-
Ceive the teachings from the sand watts
or the upper level and is precipitated
on zinc shavings contained in twenty
wooden Accompaniment zinc precip-
itsting boxes. Directly below the zinc
box floor are the weak sumps from
which barren solution is pumped for
Teaching the sands and filling the sand
tanks before charging.
All of the power for driving the
pumps and machinery is transmitted
by means Of electric motors and will
not exceed a hundred horsepower per
hour. The machinery consisting of
mixer, pumps and motors in constant
use is installed in duplicate, thus
avoiding the necessity of shutting
down to make repairs.
The mill is airy and well-lighted with
arc and incandescent lights, and a fea-
ture of its appearance is the compact
ness and convenience shown in the
general arTan cement.