The Goldfield news and weekly tribune. [volume] (Goldfield, Nev.) 1911-1947, 1916-09-02

Drifts .---.... 1897 feet
Crosscuts ...... 3OO7 feet
Raises 1892 feet
Wines .... Sc feet
Velvet or Shaft No. 2 595 feet
Total ......-..--.-..-. 1917 feet
at a total cost of ~$57,S26.OO, exclu-
sive of shaft, or an average cost
of $685. per foot, which was lower
by $2.94 per foot than for the
preceding year. The sinking of
the Velvet shaft, or shaft No. 2,
during this period cost $~22,052.59,
or an average cost of $37.O6 per
foot.
Operating Results
The mining and development
costs were $40 per ton, which in
cludes all Stopping costs, and the
cost of S,917 feet of development
work. The total operating cost,
including construction, is 1857 per
ton of ore produced.
POleverda Claim
In the Poleverda claim 1852 feet
of development work vas performed
during the twelve months, which,
together with slopes, produced 500
wet tons of ore averaging $4,000
per ton, having a value of $780,
100000 (mine sampled.
The downward extension of the
SPA ore body that vas found dur
ing the fiscal year 1915, 100 feet
south of the Poleverda-VeIvet side
line, proved to rake easterly into
the Velvet claim.
Cross-cuts in a southerly direc-
ton as mentioned in 1915 report,
were driven to the extreme south
westerly portion of the claim and
cut two promising s%tringers of COM
mercial value, which, however, were
not of sufficient size to produce in
profitable quantities. Drifting,
raising and prosecuting continues
in this section of the claim on the
932-foot level.
Velvet Claim
In this claim 1865 feet of de-
NSioPiiItit WIN "oo PSi ~
which, together with slopes, pro-
duced 90.734 wet tons OF ore aver
aging $35.42 per ton, having a value
of 81, 0SS, 59S.28 (mine sample).
The shale-latite ore body found in
the fiscal year 1915, and mentioned
in last annual report, has been stop
ed steadily from the 930-foot level
up to the S00-foot level, a distance
on the dip of over 800 feet and
although much ore has been mined,
a large tonnage of good ore remains.
Ore is now being extracted from both
the east and west sides of the stope,
and raises are being driven from The
1017-foot level with a view of eX-
posing the downward extension of
this ore body.
The shale ore body exposed in the
fiscal year 1915 has been exhausted.
level would not admit of profitable
handling. Development work con-
tinues in this mineralized shale
zone Both the contact vein and
the shale vein lie very flat, having
an average dip of 81 degrees from
the horizontal. This fact explains
the short vertical distance between
levels.
Flat Dip of Ore Body
The Velvet shaft, or shaft No. .,
has been sunk to a depth of 800
feet, and a large amount of dc
velopment work has been perform
ed on the 100 and S79-foot levels.
Development work OF lower levels
proved that the mineralized portion
of the shale-latite contact dipped
away from the shaft, consequently
the deeper the shaft was sunk the
greater distance from the mineral
lied zone. Therefore, it was lie.
cided to discontinue sinking until
results from the development work
on the 1017-foot level were de
termined.
The Velvet and Poleverda shafts
have been connected on the 790-fCot
level, and a crosscut from the Vel
vet shaft connects with the Slopes in
the present ore body or the S79-foot
level, making it possible to hoist
ore through this shaft. that was
formerly hoisted through the Pole
verda shaft, thus relieving the con
gested condition of the latter.
Extensive development is now be,
!, carried on in the northerly portion
of this claim on the 769 and 879-
foot levels. and also in the north