The Salt Lake tribune. [volume] (Salt Lake City, Utah) 1890-current, 1911-09-30
Cost Distribution

l0n0lllou OF mines.
Clermont-The ts6 Intermediate. be,
tween the $50 and 60O-fooI levels. and
just south Of the .2S stspe. has been eN-
tended forty feet and produced 265 tons
iol and i2S Slopes. produced 81 tons. OF
$50 ore. This raise Is now twentv-flve
feet above the back of the i0l stope and
is still in good ore The jl2 intermed-
tended and has produced loss tons Of
ore worth so per ton; The 700 inter
mediate. below the lo7U-root level Is
now in four feet OF $40 ore.
Red Top-The SO5-B crosscut. about
100 feer north nf the main crosscut from
the, shaft. produced I61 tons Of $50 ore
Although of not a very high grade this
promises TO he rather an important stope.
Crosscuts into the hanging wall OF the
COLL stope exposed six feet of SIC ore:
which seems 10 extend the full length of
large tonnage
New Ore in Mohawk
Mohawk-A new level is being driven
at 80 feet from the collar of the shaft
10 connect with some very good ore that
has recently been discovered at about
Of the big III stope. The 35i sill pro-
duced $50 tons OF sl5 ore. A new slope
(300-X) has been opened up about 200
feet north of the shaft and produced 3O5
tons of $40 orc. The intermediate drift.
so feet below the third level, and south
of the 35i stope. has produced 500 tons
of s2s ore The face is s,ill in ore and
the walls are not exposed.
Laguna-At the Laguna the Hazel
shaft which is $50 feet deeper and about
100 feet northeast OF the Laguna, is be-
ing unwatered and will be connected with
the Laeuna workings. giving us a level of
l5o feet deeper than our present work.
ing level.
Mill-wc are now engaged in con-
structing n plant 10 treat both The ac-
cumuated and current residues from the
present concentrate treatment process.
Two Edwards duplex roasting furnaces,
with lf2x13 feet available hearth area
one Baker cooler. one 5Xlsfoot tube mill.
together with The necessary bin room and
conveying apparatus, VIII be contained In
steel building. tu be erected FOR the
purpose. The additional tanks for coll
lecting the roasted product and agilat-
ing In cyanide solution will be contained
In an extension TO the present plan. The
gases from the roasters will pass through
settling chambers To a stack. situated
high enough above the mill TO avoid the
effects of the fumes. Tests show that
40 per cent of the value of these resi-
dues can ne recovered, with an annual
saving OF at least $4,000. The plant
viii cost approximately $4,000 and viii
be in operation by January Il. 1912.
Good Ores at Depth.
In the foregoing report. as well as In
other recent reports. little is said of the
ere exposed on the deepest levels. but
this fact Is accounted for by the custom,
OF dealing only with ore bodies from
which actual production has been made
or with those that have been blocked out
to sufficient extent 10 enable the engi-
neers TO sample Them in An exhaustive
manner and determine their value and
volume beyond the question OF doubt
The one that has thus far been extract
ed from the deepest levels has beer
taken out entirely In the process OF de
velopment and this work Is necessarIN
performed with less speed at such dcpti
than nearer the surface. There is a gooC
showing OF high grade ore on these deep,
er levels deep 1900 feet on the In.
cline % the vein but il is not yet blocked
out in such manner AS Ia justify the
company, in the opinion Of its engineers
in estimating i,s value or tonns &c,