The Goldfield news and weekly tribune. [volume] (Goldfield, Nev.) 1911-1947, 1914-08-01

TONOPAH OUTPUT BREAKS RECORD:
MINE DEVELOPMENT OF SILVER CAMP

I reached a depth of 25 feet on a width
of 6 feet of very good ore.
This winze is about 1000 feet west
of the shaft and is being sunk on
what is known as the H~anging-wall
vein which occurs in a contact of
rhyolite foot and trachyte hanging
wall and is from s to 10 feet wide,
about 8 feet being of milling grade
and the remainder of good shipping
grade. No water has been encount-
cred here and the winze will now be
equipped with a compressed air hoist
and sunk to a depth of fully 100 feet.
The management decided to sink
on this vein for the reason thai had
sinking been commenced on the Mer-
ger vein in the lower contact, water
would have been encountered at
shallow depth and sinking on the
| Merger vein will not be resumed I'M
til the Victor crosscut reaches that
assure and it's pumping plant drains
it of the water.
The opening up of the mine below
the present level will mean a vast
addition to the reserves of milling
ore in the property. The 117O-foot
level has so far proved to have been
the best in the mine, the vein at this
depth having furnished sufficient
shipping ore to pay for all develop
ment work on and below this level
as well as for the surface equipment
of hoist, compressor plant, etc, and
it is confidently believed that at
greater depth better average grade
values will be found.
In the past week the company ship
ped 100 tons of good ore to the old
Belmont mill.
Tonopah Elk.
The Tonopah Extension Mining
company established a new high
record for bullion shipments this
week by sending III on the 21st
inst. SO bars of bullion, weighing
69,S42 ounces equivalent to 2 tons
100 pounds, of the estimated value
of $4S,90O, based on a selling price
of SO cents per ounce for silver.
This cleanup represents the opera
tions of the mill for the first Is days
of the month, and exceeds all prev
ious output records despite the fact
that the mill was closed for Sc hours
for the celebration of the 4th and 9TH
of July.
Owing to the fact that the ore now
being treated is of very much higher
average grade than for which the
mill was designed, it has become
necessary to effect a slight reduc-
ton in the daily tonnage milled in
order to give a longer time for the
cyanide plant to operate, and re-
cover a high percentage of the as
say values. 1t is expected, however,
that the new Dorr thickeners will
be received in the course of the next
10 days and when these are installed,
the tonnage of ore will be increased
as the cyanide plant will then be of
sufficient capacity to treat the pres
ent grade ore and recover a high per-
centage of the assay values. An aver
recovery of over 81 per cent is
now being made, but with the addi-
ton to the cyanide plant it is expect
ed that this will be increased.
The mine continues to develop in
a most satisfactory manner in both
the old and new workings.
Jim Butler
Three important developments
were made this week in the Desert
Queen workings of the Jim Butler
mine, where the south crosscut on
the S0O-foot level encountered the
downward extension of the South
vein, showing 3R feet of good ore,
and 20 feet further south %encount-
cred Is inches of very good ore,
which is believed to be the down
vein, and the south crosscut is being
extended in trachyte formation to
prospect for other orebodIes.
On the 70O-foot level, the south
crosscut has encountered the down
ward extension of the Occidental
vein, showing 2 Y feet of fair ore.
These are most important develop
ments for the reason that both these
veins have now been proved from
above the 600-foOt level to this
depth, a height of over 200 feet, and
prosecuting to the downward extern
sion of the veins on the 9O0-foot
level is in progress.
Drifting on all of these orebodies
will be commenced in due course,
and this work will add very mater
tally to the tonnage of ore exposed
in the mine, where very little stop
ing has been done.
Midway