The White Pine news. [volume] (Treasure City, Nev.) 1868-1906, 1902-03-13
Machinery In Nsw chaiaman Mill
Tested and zound to Run
Smoothly.
VIII Be SCANNING on Ore by the
First of Ns~s Week at
the EStsst.
Brief Description 0f fhe Bic Plant
and the MethpA Of Msnd-
ling Ores.

rOr several Gays past the macn.nery
in the new Chsinman mill has been in
motion preparstory 70 making the trial
run on ore, and sside from few minor
changes was found to,work perfectly.
The coverings for the bottom OF the
tanks are on the road between hero
and Eureks, having fbeen delayed by
the storms and consequent bad roads.
and as soon rs these have been put In
place the plant, will be In readiness for
handling ore. Tho placing of the re.
maiuder of the burhps on the tank
bottoms will requirolnot moro than a
couple OF days and there is no reason to
doubt that the. pladt will be in opera
tion by Monday HSxt at the latest.
A brief description of the big plant
and the methods employed in hand ling
ore follows
From the mine, which is now in ex.
cellent physical condition, the ore is
hoisted aud dumped upon the grizzlies
surmountlng the 200,ton double com.
partment ore bin, the finer grade
dropping into one compartment aud
the coarser into another. From here
it is conveyed by means of o curved
tramway adistance OF 200 yards TO the
new mill, where the coarse grade of
ore is fed direct to the crusher in
the highest elevation and the finer
grade is deposited in three large bins
with combined capacity OF $50 tons.
This floor Is 25x48 feet and in addition
to the ore bins accommodates at the
east end fifty-horse- power electric
motor.
From the bins the ore passes to the
rolls, and thence to the two Trent
Chilian mills on the Level below. Con.
nected with each Of the Chilian mills
are four snalgsmasins plates xe-feet,
on which ere caaGhA q good percent
age Of she- gold values This elevation
occupies floor space ots3axe0 feet.
On the level below are eight Camett
tables to which the taiiings pass from
the amalgamating plates, the machin.
cry on this level being operated by a
2O-horse-power electric motor.
Then comes the settling tanks, four
in number, each twenty-six feet square
and five feet deep, with capacity of
$50 tons each, where tho ore is settled
and dried, these tanks occupying a
room 32xl44 feet.
From these tanks tho dried ores are
conveyed by means OF cars to the leach.
ing tanks on the level below, and of
which there are six. These require a
floor space S2x1So feet, and here the
ores are relieved Of their golden trea.
sures By means Of the cyanide solution
which passes through them, q process
which it is estimated will occupy about
five days.
This solution, bearing its accumula.
tion OF gold then passes to the precip-
itating tanks which are hlled with zinc
dust and here the gold Is deposited,
the relieved solution passing on to the
sump from which it is pumped back to
its tank to be again used, when proper.
ly strengthened, in the treatment OF
other ores.
This constitutes the plant proper to
which has been added an addition % X
go, whore the shines ARE to be treat
ed without extra handling. but as yet
the tanks for this level have not been
received.
The entire plant occupies a floor
space on the mountain side OF POS feet
in length by from % to 1870 feet in
width, according to the requirements
of the different elevationst and as il
stands the structure presents a hand.
some as we'll as a substantial appear
ance.
The new mill was designed for the
treatment OF the peculiar grade OF gold
ore produced in the Chairman property
and it has no duplicate in the country.
1t is the largest wet process combina-
tion plant ever constructed and the re-
suit OF the test run to be made will
demonstrate that In its design and con.
struction 1t will fulfill all the promises
that have been made for 1t.
A. b. Bowler of Elmira, N. ", min.
ing expert, arrived here last week from