The new North-west. [volume] (Deer Lodge, Mont.) 1869-1897, 1869-12-17
THE DRY ORE SEPARATION

''Ss" >ObsNvubW UNS BStOJCNt US WIFI S4IIIlC
i'cns concerning tho new process ly which
nc proposes working the ores OF his Flint
Greek property. This process differs, radi-
cally. from any heretofore introduced in
Mon'xna, mud VIC know oil innovations are
regarded with distrust by miners. But this
process, theoretically, has appealed to the
favor of some Of our old miners, and is de-
m"ns'rated practical working. SUCCESS in
Colorado, Mr. II. s. jacobs Of Georgetown,
having one in operation will. gratifying
results. Therefore, as is may act an impor.
'ant psr, in the Development of Montana
Minerals, We give brief account of it,
The ores are silver. 1t is purposcd 10 here
seperatc the gangue from the black sulphu.
rcss, whereby the silver in IL tons Of vein
orc. will bc concentrated into one ton If ore.
and nis will l& shipped 10 Berlin. Prussia for
'mc''ing. The principle involved is spc.
rif'c gravity. !. c. that silver being heavier
than rock. just Is wheat is heavier than cl,nff.
the silver can be retained while tho roch il
blown away. applying with air the princi.
pie used with water in placer mining.
10 accomplish, this, the rock is pulverizcd
dry. by ordinary stamps or cr,,sl,cy. This
p"'vcrizcJ orc is then carried by elevator
cups 10 the top Of Tive building. aud falls on
series OF sleeves. by which it Is separated
and conveyed to eight ditsercat bins, cacI,
receiving particles Of exactly the same size.
This sizing Is one Of the most importan,
parts OF tho proces~. the separation without
wss'asc Of silver dcpeading almost wholly
upon II. When 50 Sized, the powder is
scs'dy for kroms Dry Orc Serara.or. This
apparatus Is about the size of an ordinary
dining table, and costs $1,000. laid down
here. II works on exactly the same principle
IS u Tanning mill, used in separating grain
from chalf. In this instance tho rock IL
blown away, tho black sulphurc.s contain.
Ing silver, galcna and base metals remain.
Dy this separation all the precious metal Of
fifteen tons Of vein orc can he held in one
ton OF concentrated Orc This will he pu.
!" 100 pound sacks and shipped across tho
scs to be snn'tc.l. "Why not smell il
here" We'll! our smelling has not been
fucccss. In the Berlin works. and ut Bal.
5eeks works, Newark, N. j. they guarantee
within fifteen per cent of fire assay. In
Berlin the cost Of smelling il $2o per ton,
at Balbccks SO per ton, and the ocean car
riagc is nearly nominal "Jjow docs il ijg.
urc" The comrany hss now on the ore
pile of the Speckled TROUT, coo tons Of rock,
which Mr.. Ncu averages y. 900 per ton {:
On the orc piles Of the Poormans Joy arc 600
of rich orc. Take tho coo tons of Trout ore
for example. by this npparst,r and process
the silver Is concentrated into one. fifteenth
tho wcight-forty tons, which remains to
ship aud smclt. Tho estimate IT waste IA
Is pr cent. leaving the Dr.: and Cr.
thus: a....
go tsss # orc $4,000 PEI ton $4,000
M.siSr to e su = i r ~ , sn si
5 r;sS: ss g s ssS: 81: ss
sss'''as q ."". e ~ - = e : g" 500 %
y Pr cent. wassagc. .............iAM0 S.o0e
'!"' ...--7-0.. eaaooo
The estimated yield Of ore may look big, but
Mr.. Sanders last year shipped 20 tons of
roos,nsns Joy vein ore to Hamburg. and
the yich was q. 0oo-&4oo per ion. The
frcights are calculated exact save tho cost to
Corinne, which 10 estimated low, ~ return
freight. It goes thence to Omaha Ivy rail,
then via New Orleans by water. We have
given the above rs figured Ivy the Company
1T which Mr. Sanders is the supcrintende
and they arc sanguinc Of success. Certainly.
II any ores in Montana warrant 1t those Of
Flint Creek Go. The Company has now
out 100 tons Of ore. the Trout showing =
rrcvicc Of 9 feet, and the Poormans Joy a
crcvicc Of s fect-eolid quarts. The Com.
rany has tI'ebu'ldings up. cnginea and crush.
e. all eel, and ready for the Separator which.
will hc In position in % Or 20 day.. It's ca.
racity Is ten tons per day. Negotiations
are progressing for . I'VE stamp mill and
two concentrating pans win b put In where.
With ths gangus blown over win b treated
and portion Of tho . per cent counted u
lost, saved. Il might also b sisted that III
Berlin works allow for the base metals-au.
tin,ony, e:c.-whicli will nearly pay The
smelling. We wish Mr.. 8! Ill the success
he h sa,guinc of. for he u = ''rustlcr" and
encrgciically. endcsvoring IN . legitimate
and cominendsble method. eood for the
the oount.y - wrll - himsclf-to repai,
nh disastrous commercial misfottuncs. A
man = descrvingof credit WIN coaqucss "a.
versity. and CoIs viii d. Il. n perseverance,,
and vigorous industry w,li Do IL s W
In speaking Of I" the lagiGlasusss last
week the NoHrI.Wssr says I'VE DO -
propose 70 discuss or determine issues" Il
WAS written. 1--WE Do net psoposs 70 discsss
dctesminsd issses," and tho error wss oves.
locked In psoof. ,t 6fl. lo ( 9.t 5f
CIV. Asljeys Message published J. ~
Niiss 1ssAs q Dsc y, jSssin, oecsplIlpl
sSs'H Sasns. ~ Z Aa'faf ~ psess Il