The Goldfield news and weekly tribune. [volume] (Goldfield, Nev.) 1911-1947, 1915-06-05
CONTINUED from Page one.,

same was true OF the ores m1ne0
from the Los Gazabo and Combina-
ton veins. In this Connection it will
be recalled that the company was
involved in extensive litigation dur.
ing this period, and was restrained
by injunction from mining the ores
within the most productive sections
of the Los Gazabo vein. The grade
of ore mined from res free from
litigation did not yield sufficient
profit to justify a vigorous policy of
development work in an effort to find
new ore bodies. In addition to the
expense involved in carrying on the
litigation, mining costs show an in
crease due to the fact that a larger
amount of low grade material was
mined and a larger percentage OF
waste rejected therefrom, as COM
pared with preceding years.
Total development work consisted
of 4,173 feet of drifts, crosscuts,
raises and wines, 795 feet of the
above in the No. 2 Stringer section
and 1878 feet on various levels, con-
nected with the main incline shaft.
On the $50 level 1919 feet of work
vas performed. Placer operations in
1912 and 1913, had uncovered the
outcrops of several veins lying south
of the Los Gazabo vein. To explore
these crosscut No. 461 was extended
464 feet into the footwall of the Los
Gazabo and two veins known as Nc.
All and No. 473 were cut at a depth
of 100 feet beneath the surface. An
oreshoot approximately 800 feet long
was developed in All vein, which
produced during the veal 1882 tons
of milling ore. Vein 473 is a fault
fssure of varying width. Where in
tersected by the crosscut, it is rep
resented by a zon As feet wide, and
the ore derived from this develop
ment work averaged between SO and
81 per ton. Several small shoots OF
higher grade ore were exposed in the
vein by drifts and raises, but the
result of the development work in
dictates a large body of ore averag-
ing approximately So per ton. AS this
grade of ore could not be ~profitably
mined with the present milling IA
cilities, only the higher grade por-
tions of the vein have been worked.
Results obtained to date indicate that
a large tonnage of low grade ore can
be developed in this section.
The No. 2 Stringer section pro-
duced S3,7O2 tons, which after
crushing and screening yielded 49,
282 tons of fines sent to the mill and
64,420 tons of oversize, or waste.
placed on the dumps.
Development work was resumed
in the Keane vein on the 700 level,
and has been continuously prosecut-
ed to date with excellent results.
More will be said of this in the report
of operations ending March 81,
1915. Among other developments
undertaken from the 700 level, the
most important was the driving of a
raise through a portion of the sheet
ed zone in the Black Hawk and
Sunnvside No. / claims. This zOn.
is made up of a series of parallel
stringers with a filling of quartz and
tale. Results obtained indicate a
screening proposition on a large
scale, but the grade of the ore is not
sufficiently high to justify further
work with the present equipment.
The development work performed
during the year ending March 81,
1915, represents an increase of 534
feet over the preceding year. After
the settlement of the litigation in
August, 1914, a new plan of devel-
Opment work was ~inaugurated in or
der to open up the Los Gazabo ana
Keane veins at greater depth. The
incline main shaft was sunk 231 feet
at a cost of $11.97 per foot. It's total
depth is o 1909 feet. The 500
level was connected with the shaft,
a station cut and loading pockets In
stalled. At the same time the drift
and connected with the Sphinx work
ings, opening up considerable ground
for stopping.
The auxiliary electric hoist, for
merly used to hoist ore to the 700
level, was moved to the 500, and a
winze equipped to connect with the
lower workings of the Sphinx mine.
Drifts are being driven from the
winze on the 1000 level to open up
several blocks in the vein, which
had net heretofore been prospect
ed. Ore is now being drawn to the
500 level from three glory holes. one
on the Great Western and two on the
Gold Leaf claim.
The sinking of the main incline
shaft has proved to be of great i'm
p%ortance. In the eastern section of
the mine, the Los GaZabo oreshOot
had been mined down to the 700
level. Work below that level had
not disclosed any large ore bodies,
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