The Salt Lake tribune. [volume] (Salt Lake City, Utah) 1890-current, 1909-04-29
..50O.960
Cost Of Ore Extraction.
Average Value Of Ore.

1
Average value Of first class crude ore.S9,l "a
Average value OF first class zinc ore. :. 100
Average value of first class cop. ore.2l. Al
Average value Of first class ore ...- 1873
The total value OF ores shipped was
S54S .0S.
Mr.. Harris concludes his report as
follows:
tract with the Tintic Smelling company
to handle all OF our product for period
OF two years on fair basis of treatment.
Prior to this We were unable to sell our
ores TO the local Smclters owing to eN-
cessive treatment charges demanded. The
Tintic Smelling company was delayed il
completing. Its slnclter causing a delay
until July Is, 1908, and then we were only
allowed one-half Of the contract tonnage.
We were also subjected TO q further de-
lay. when on September rs, 1908, We were
defects at the smelter. necessitating their
closing down, The shipments were again
started carly in January Of this year OH
basis OF forty tons per day with an as
five tons per day could be handled early
in February. These delays have very
materially reduced our output; as we
were unable to break any great quantity
of ore on account of room for storage,
During the year the air shaft was re-
tinbered from the surface to the one hun
dred-foot level owing TO the air shaft haN-
ing caved in during the previous year.
This work was necessary in order TO give
us better ventilation and for the safety
on the 5O0-toot. level and extending
down to the 6o0-foot level we, have de-
veloped considerable copper-lead ores
which should produce a. fair tonnage.
The zinc ores remain practically undis--
turbed, On account OF the low price OF
spelter we have been unable to find
market for this class of ore.
We are now prospecting on our 100, 800,
500 and 700-foot levels In new territory,
and with every indication OF finding new
ore bodies. The profits OF the store for
been turned over to the treasurer.
C. Q. Payne. prominent metallur-
gist Of New York, offers his report on
the Investigations he has been making
on the treatment of a great tonnage
of Horn Silver ores now available, but
which requires a new method of treat
ment before the same becomes availab bic
for the market, Mr.. Payne pursued his
investigations in Dallas, Tex: in Salt
Lake City and Denver, and his report
concludes as follows:
The results of the Denver test described
above demonstrate that all OF the ores
found in the Horn Silver mine can be
successfully concentrated. The treatment
which / have found gives the best re-
suits, thus far, consists in.
j. Crushing the ore to about so mesh.
2. Roasting at a red heat for a few
and then cooling quickly;
3. Dividing the ore into ), to 10 sizes
by means of screen of the 'vibromotor,
or Keedy, types having a very large
screening surface. n
4 Concentrating each size separately
upon a Card concentrating table. and rel
tablng the middlings products so OBJ
tained In the case OF the zinc orc.
g. Retreating the zinc concentrate !
after drying, upon an cloctrostatic seps
rator in order to remove any remainin
lead and silver present, {
The milling costs. as they will apply
the conditions at the Horn Silver mi !
Frisco. may be taken approximately
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