The Salt Lake tribune. [volume] (Salt Lake City, Utah) 1890-current, 1906-02-24
BAMBERGER-DE LAMAR MILL.
Interesting Details Regarding Plant
That Is Now Nearing Completion.

The new mill of the Bambcrgcr-De La
mar Gold Mining company, now nearing
completion Gays 1he DE Lamnr Lode Is
designed TO treat coo tons of tailings
daily. Tho building, situated on gradu-
ally sloping hillside. occupying an areh
OF loSxl76 feet, Will have ITS equipment
arranged on four levels permitting
gravity flow throughout.
The tailings Will be scraped by means
of wheel scrapers to small hopper
above a mixing box situated on the side
Of the dump. A Hve-horse-poWer motor
supplies the power for operating the mix
err Into which n stream OF diluted cyan
ide solution Ia constantly delivered by a
No. centrifugal pump The product
from the mixer. consisting OF sands.
plimes and solution, flows 900 feet through
a wooden 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 ca
pacity of siXty-hve tons of sand. Ths
cone-shaped The pulp enters the cone
and the shines and solution overflow,
while the sands settle through neck to
the sand vat directly below,
After the tank Is charged With sand II
Is subjected to a short teaching, followed
by washings with a diluted solution ana
water, the final moisture being drawn OF
by vacuum. after which the sands
discharged through from bottom dis
charge doors into two-ton cars, arranged
TO run in trains.
Handling Of Overflow.
The overflow from the separating cone
Is distributed to eight twelve slime
tanks. located on the next level The
diameter. eight feet vertical slaves. with
q lfty-deRree cone bottom. The overflow
from these. consisting OF clear solution.
Is taken OF continually by means OF q
periphail weir and flows TO a sump, from
whence it Is pumped back TO the mixer
to again traverse the same journey, thus
being named the circulating solution The
flow OF the slime or clarifying tanks Is
arranged go that they arc nlled at sue
cessive Deriods-while one is filling an
other is settling or being washed or dis
charged.
The shines are allowed to settle for
short time and then the clear solution Is
decantcd by means of a thrcc-inch pipe
to two gold-solution storage tanks. thirty
feet In diameter and eight feet high, To-
Gated on the third level After having
decanted the clear solution. the shines
are washed with water entering through
from pipes near the bottom of the cone
shines from above Having completed
the washing, they are again settled and
the wash water is drained to the over.
flow stump. entering the circulating solu
tion and TALKING the place Of the solution
originally drawn off for precipitation.
thus keeping the volume of the circula-
ting solution constantly. the shines stll
being of such a consistency that
through siX-inch openings ut the bottom
OF the tanks into laundsrs conveying
them to the elime-settling dam, where ar.
additional amount OF water Is recovered
and returned to the mill
Electricity Only Power Used
Besides taking the gold-bearing solu-
tion decanted from the slime clarifying
tanks, the gold-storage tanks receive tho
teachings from the sand watts on the up.
per level. which are precipitated on zinc
shavinss contained In twenty wooden
accompaniment zinc precipitatine
boxes Directly below tho zlnc-box floor
are the weak sumps. from which barren
solution is pumped for teaching the sands
and filling the sand tanks before charg-
Ing.
All of the power for driving the pumps
and machinery is transmitted by means
OF electric motors. and will not exceed
100 horsepower per hour The machin-
cry, consisting OF mixer pumps and mo-
tors. in constant use, is Installed In du-
pllcatc. thus avoiding the necessity OF
shutting down to make repairs. The mill
is airy and well lighted with arc and
incandescent lights. and feature of its
appearance is the compactness and con-
venience shown in the general arrange
mCnt