The San Francisco call., 1899-07-04
COMSTOCK MINES.

The official statement of the superintendent
of the Consolidated California and Virginia
mine for the week ending June 80 reads fol-
lows: The Comstock Pumping Association
has been engaged IN the following work at the
C. and c. shaft: 140O level-The west drift has
been extended q feet; total length $50 feet;
the face being in vein porphyry and clay. 1850
Necessary repairs being made this
level. 1880 level-The Slopes have been ex-
tended south and west and have raised one
floor. The ore in the new ground referred to
in last weeks report has ranged in width from
to 10 feet. 1t has northeast and southwest
and dips to the southeast on the sill
floor, where we have followed the hanging wall
richest portion of the ore is now in the bot
tom. In raising on the we found that near
the caps of the third floor set the hanging wall
clay turns over and runs west nearly fiat. The
$50 ore reported last week extended but a short
distance above the point where 1T was then
sampled The ore going west in the new
ground assays from $40 to s25 per ton, gold
value. Above the clay found old timbers.
AS near as can be determined the ore in the
new unworked ground goes off sharply to
the west and dips below the track floor of the
1850 level. In making room TO work and while
stopping we have extracted during the week
100 tons of ore of gold value of SIG rs per ton.
and a little from old filings We also extract
ed about Is tons of 50 ore that was separated
from the ore of higher grade. 1S00-When our
compressor on the surface subjected to a
working strain we found several defects that
had to be repaired before could depend
air for work on the 1900. The compressor
was overhauled and will start tonight, and to-
morrow work will begin on this level. The
station seems to be in good condition, but as
there is a great deal of slum and broken tim
Der on the level 1t Is not possible TO state at
this writing how soon development work can
be started. The water is again down near the
1850 level and we hope soon to open that level -
The official statement from the Ophir mine
reads follows: mo underground work has
been done through shaft during the week
Central tunnel-The north drift has been ex-
tended feet total length, 376 feet; face in
clay, quartz and porphyry. The face is now
and south line of Mexican joint east cross
cut was started and advanced 20 feet When
feet In, heavy hanging clay wall cut
clay. The face is in soft porphyry. This cross
cut will be extended a short distance further
there is a known vein to the east of us, If
this vein is not found in a short distance we
will before extending the east crosscut, a
so as to learn the position of the footwall of
the vein that we have been following to the
south. The Sutro tunnel direct connection was
advanced 10 feet; total length, 22S feet; face
in soft porphyry. At point 224 feet in we
struck vein feet thick standing nearly YER
tical and dipping to the west. The vein IL
largely quartz. showing some gold and silver
but no ore of value. When the drift is ad-
Work in the southwest drift has been CON
tinued and the drift extended feet;
cut through thin clay seam. Since that time
there has been steady Improvement in the
more westerly course, showing a little water in
the bottom, and the quartz and porphyry give
low assays the value being largely god''
In the Sierra Nevada mine on the 140-foot
level the south drift started from the main
west drift opposite the north drift was ad-
vanced 26 feet; total length. 133 feet; face in
porphyry with of quartz and clay Two
men have been employed in easing timbers and
repairing drifts 900 level-The north drift from
west crosscut No. has been advanced 10
feet; total length, s5 feet; face in porphyry and
clay.
In the Chollar and Potos mines the joint
west tunnel has been advanced during the
porphyry and boulders of quartz which give
low assays. On the tunnel level they have one
man on repairs. Repairs to the Bullion Potosi
west crosscut have been completed to the face
and the crosscut advanced 10 feet: total length
22s feet: face in clay, porphyry and stringers
of quartz yielding. low assays. Sutro tunnel
level-The Zadg drift has been advanced 13
feet during the week; total length. s3s feet;
face in very hard porphyry.