The Helena independent. [volume] (Helena, Mont.) 1875-1943, 1892-05-28
LBeiensine Journal Says + y Not
the Success Claimed
Tor II
llo9od Dimculty II Obtaining
Actual Results From Those
Sa Using Il.
nS4whA &-respccts ~ n nouIder District
II fnsk Csunsy-Bsnds ON Jsfferson
Csunty Mines.

S5sN4sl writer Ia the Engineering and Mimi
feurnsl. Who II apparently not stronRl
nprssssd with the MoArthur-Forrest pre-
- 81 reducing refractory ores. in the las
losue of that paper. criticises - very @
yssely. AZ the process has and y attract
~ y RrAAt deal Of attention IN Montana
Mnrtraotu fgona the article in question ar
S4aiven. A great deal il taken from the crit
Il Soirna of che process by the writer in tn
NJ J0urnal. when IL 10 remembered that JONI
n b. Rothwell. whose method, is doomed is
nlear relative Or the editor and proprisso'
sos ~ Engineering Journal. Tbs wrlSer II
Qssstion ays:
saAssLooking over the progress Of the process
VII d % oncs kaown that whatever reputa'
tion II has waa mot obtained in this country
although II has III most enthusiastic and
hpossibly interested advocates here. In
6opth Africa IL has proved in certain cases,
notably that Of the Robinson Gold mining
company, limited. . very efficient method
81 treatment Of tailinga, after they have
ppasssd through battery and plate amalga-
nation.
I'm New Zealand. whore strenuous efforts
were made 10 introduce the process at the
Mount Morgan works, which at that time,
Nv lsast. treated large quantities Of high
Grade gold ores BY tho chlorination process.
II Wa rejected BY the managers after a
ssriss Of exhaustive tests, which were con-
dueaed BY those in no way inimical to this
ryocsss or any other which would prove
nstallurgically economical. This has been
~ ease in other portions Of Australia, ac-
ocrdinc to Official reports from that country.
I'm the United States reports are daily
hoard OF its progress; II is, according to
certain newspapers. achieving much success;
w. whom " mako inquiries. it is impossi-
Bic TO obtain actual working results, though
W. gst vaRue statements that it has workrd
wonders. BY the promoters of this Ameri-
Gan company IL il stated that mills are al
most daily being put mp to work the process,
vt inquiry has failed to locate them. 1t
has hecn claimed that a McArthur-Forrest
Dakota. This the Deadwood papers char
acterized a. an absolute falsshood. The
facts are that the process had been tried at
che Golden Reward works. which are now
using, with great technical n commercial
success, the barrel c~hlormation process, as
introduced and developed at these works
~ John e. ROCKWELL. and that cyanide had
VI -
ut ID claimed by the sssayer Of the Mercury
Mining company, of Utah, that over 80 per
cent 10 extracted from it's ore. whereas,
whom AmalRamation was used the percent
age did not rise above 20 per ccnt.. and at
the same time tho expenses were much
lighter. The officers of the Revenue Min
ing company, of Revenue. Montana, claim
m much for the application Of the process
.AAAhair works, although their statements
are somewhat weakened owing to their
financial Interest in the process company,
and the absence Of any specific working re-
suits. The Excelsior g. Eureka mine. in
Oregon, s1psrimented with the cyanide
process and succeeded in recovering only
60 or 65 per cent of the Rold-ths process
was therefore rejected. Outside of these
places mentioned, it has been impossible
Tor m to obtain any information Of value.
In regard to the merits of the process it
may b. said that while favorable testimony
ID scarce, the process has certain, but linn
tied applications. On some ores it has
proved TO be Of value, but that it or any
other process il 2 universal solution of the
problems presented, every intelligent metal
lurgist knows 10 unfounded."