Custer weekly chronicle. [volume] (Custer City, S.D.) 1890-1931, 1893-12-16

the gold has been extracted and the re-
fuse thrown on the dump, il described
in the Daily Pioneer of the 18th as fol-
lows: "The ore is conveyed from the
cars into elevated ore bins, six in num-
ber, built directly back Of the building,
having capacity OF $50 tons. From
the bins the ore is taken by cup car
rier tn the Gates crusher, which reduces
il to the size Of small cobble stones, the
crushed ore then passes down a dryer
built Of brick, which inclines at an
angle Of 35 degrees, during its progress
down this incline it is subjected to
flame which passes over it from the
lower end its entire length and down
around below and out OF the chimney.
The ore is not roasted but simply dried
thoroughly. By series Of cup carriers,
the now thoroughly dried ore is con-
veyed up TO Cornish rolls where il is
ground as fine as possible; from the
Cornish rolls it passes TO Morrell pnls
yerizer, handsome but poDderous
machine weighing nine tons where it Is
ground to fine powder. Then it is
conveyed by carriers TO a 40.mesh screen
where the ore is separated, the fine
powdered stuf finding its way 10 az Gre
bin stationed on the tank floor. while
the coarse stuff, if any, finds its way
back TO the pulyerizers by another pass
age, During all this treatment the ore
is not handled once and no attention il
given il. From the ore bin on the tank
floor the ore is conveyed by cars to the
six steel tanks, immense affairs, being
"a feet in diameter, which are placed in
two rows, three in each row, on the
tank floor. Over each tank runs track
upon which the ore cars run and from
which the tanks receive the contents of
the cars. Each of the six tanks has
capacity Of 80 tons. In these tanks the
ore is subjected to the action Of the cya-
nide solution for twenty-four hours,
when 1t is drawn off into steel tanks on
the floor below, called the solution
tanks, and from here it is pumped to
the sump tanks on the ground floor,
through fifty six especially constructed
boxes, in six tiers Of nine in a row con-
tanning zinc shaving where the gold and
silver, if any. is precipitated, and the
impoverished solution remains in the
sump tanks from whence il is pumped
back TO the two SKI feet standard solu-
ton tanks situated on the tank floor
above, where il is used over again by
being renewed with cyanide. Each ore
tank after being freed Of its charge is
cleaned of its residue by simply ope ing
valve with which each are fitted and
which empty into trough, it in turn
emptying into sluice which runs the
entire length of the floor and empties
into the creek and washing the whole
thing into the creek with a hose, after
which the tanks are recharged and the
same process gone through with again.
The whole process is very simple, the
complicated nass- of machinery aud
betting with which plants of other pro-
cesses are filed, is absent. This process
possesses many advantages over others,
Mr. Childs says. Compared to smelt-
ing: 1t required no furnace, no coal,
no fuxes. which make it especially de-
sirabie to sections where smelling is
impossible. As to its comparison to
chlorination outside Of the expense and
bother saved in the endless mass of
machinery, it requires no roasting.
therefore no furnace or fuel, very
great item in expense of reduction
plant