Custer weekly chronicle. [volume] (Custer City, S.D.) 1890-1931, 1893-05-06

grade ore bodies by cheaper system oi
reduction-for the amount of ore is al
most inexhaustible, while the rich ore
bodies are not so large. The F., T.. <
Nj. V. and the b. & NJ. railroads have
enhanced the value Of property here to
a great extent, but cheaper effective
system of milling would more fully solve
the problem. This is subject 10 which
l have given some thought and study in
the last few years, with the result that
have designed a machine which will
treat successfully those so-called re.
fractory ores Of Bald Mountain, or, in
fact, any ores, provided that the par
ticles carrying the values differ in specific
gravity from the barren particles. There
are at present several concentrating
machines in use, all designed TO save
the heavy particles, which generally
contain the values but -sometimes an
ore is found which contains those par
ticles in an extremely fine state-then
the rock has to be pulverized so fine
that concentration Of the values by any
machine now in use is rendered i'm
possible. By my system, pnlverization
can be carried on TO any degree Of fine
ness desired, and if the particles carry.
ing the values differ in the slightest
degree from the barren particles, then
non-separation Of those particles after
passing through my machine would be
an actual impossbility. know that
this statement will appear TO some too
positive, but it will be to only those
whose knowledge of machinery is limit
ed. Twenty years ago several classes of
ores were pronounced nonconcentrat-
ing but many Of those ores are now
successfully concentrated to q rich per
cent by the Frue Vanner and other ma
chimes. Twenty years hence nearly all
classes Of ores will be successfully con-
centrated, and one year hence Bald
Mountain ores will be successfully con-
centrated, if get the assistance neces-
sary. Mine is q pneumatic system, ore
being the separating medium used. No
ly bitches or fumes are needed, and
plants can he erected on the mines any,
where. even in the dryest and mos: in
accessible regions. and the power trans
mitted from the water wheel or steam
engine placed anywhere that water
power or other power can be obtained
Concentration by my system, after the
ore Is pulverized, will not cost over 5
cents per ton. Bald Mountain ore will
have TO be pulverized fine, still believe
that the cost per ton OF ore for pulveriz-
ing and concentration will not reach IS
cents, and may possibly 20 down to 80
cents. The concentrates will have to
be treated by chlorination afterwards,
but this will amount TO only few cents
per ton of ore The whole cost, in my
opinion, will not exceed one dollar per
ton of ore. There are several mining
districts where free milling ores are
abundant, but where water cannot be
had. On those ores my pneumatic sys-
/ tenn will be certain to concentrate into
clean product all the gold that quick
silver now catches, and deposit it in q
steel safe, if desired, SO that there can
be no stealings by dishonest mill opera
tors. 4 company could realize millions
out of successful pneumatic system of
concentration, such as | believe nv
system to be, by going to work in this
way: First test its merits, and then
get hold of properties now consid-
cred valueless by reason Of their loca.
ton in dry regions, away from railroads,
and, in some cases, Of their at present
refractory nature making the cost of
production of the precious metal by any
of the present systems too costly 10
leave any profits after treatment am
not in a position to prove or perfect my
plans, but to any person or company
who will help me to DO so will deed
an interest In my system. | invite
criticism on this subject, but let no per-
son use that antiquated expression,
bald Mountain ores can't be concen-
trated," without first giving the reason
Why "-Thos. O'Brophy in Deadwood
Pioneer.
RICH GOLD STRIKE.
Central Point, Oregon, April 90 The
richest gold strike made in southern
Oregon since 80 has been made within
two miles of this place. The entire coun-
try is Wild with excitement. Hersh-
beeger, who made the strike. says that
the rich pay streak continues to grow
richer, and he is taking out gold in
fabulous quantities. Within two hours
this morning more than $500 in coarse
gold was taken from the ledge within a
radius of one mile. From Hershbeeg-
er's claim no less than six rich pockets
are being worked. From $50 to $500
was tai en- out Of each to day by single
miner. One ledge contains pay streaks