The San Francisco call., 1896-04-13

the third level has been extended south
and connected with the south or old shaft.
Beyond certain points, however. the level
is inaccessible on account of caves, and
could not be entered from either the main
shaft or the old shaft. No slopes have
been opened between this and the second
level. Samples of the quartz from the
cayed-in portions assay IS IS per ton, and
an average sample from the level, ex-
tending from the shaft to the point where
closed Tor width of six feet, assayed IS II
per ton.
The crosscut from the shaft to the level
is all in quartz of width of fully thirty
feet, and an average sample assayed 81 81
per ton. The level extended north has not
reached the quartz.
All of the quartz reserves now available
and measurable is block of quartz 90 feet
by 100 feet. No crosscut has been made on
the level to prove the width of this quartz,
the width to be 30 feet, and the width was
never much less than this on what is
termed the footwall vein. With the
average width assumed. for the purposes
of calculation, to be 20 feet, it is shown
that there are at least Ii. S46 tons; and the
average assay value of this ore is s. 73 per
ton.
1t is not necessary to continue with the
figures to show the richness of this great
California mine, but the figures in the
reports are of fascinating interest to the
mining men of the State.
AT depth of 800 feet from the surface
| crosscut was driven easterly and from
its end the fifth level was extended south
erly for 200 feet. The face is in good ore.
sample 49A from this point assaying gold,
S25 50; silver. 81 so; total per ton, $26 80.
The length OF stopping has been 155 feet,
and has extended nearly up to the fourth
level. The width OF material removed in
stopping has been from to feet. All of
the ground in the slopes and above the
stopped ground in the level south OF the
shaft is badly caved. The reserves left
standing here consist of block next the
| fourth level 155 feet long and 20 feet high,
with an average width of feet, and
pillar next the shaft 80 feet long, 100 feet
| high and feet wide. Tins block of ground,
however. Is not Immediately available, as
| time must be allowed for sufficient set
thing OF the ground. 1t should be remen-
| bered In this connection that sample 49A
was obtained from the only point where
| these reserves were accessible on the
fourth level, and that sample Ala from
the face of this level where the vein is
seven feet wide, assayed in gold and silver
S26 50 per ton.
North from the crosscut the fifth
level has been driven over 500 feet
but the last 100 feet is in barren rock.
At the crosscut the width of the quartz is
Qultc thirty Iett anu sample Al represents
the average value. This sample assayed
gold. Sc 20; silver, 81 cents; total per ton,
Sc 81.
The most northeriy crosscut on this
level Is in quartz and the footwall has not
been reached. The value of the quartz at
this point is represented by sample SO,
taken from the face, and sample 40. taken
from the roof, and which assayed, No. 80,
S1I go; No. 40, IS q per ton.
Undoubtedly this body of quartz ex-
tends up to the surface. where the crop
pings are very wide, and the quartz of the
same general character. Surface profile
and the cross section will make this
point clear. At no place south of the
shaft, excepting on the second level. has
any crosscut been driven into this foot
wall vein, but, judging from the surface
groupings south of the main shaft, there
can be no doubt but that the footwall vein
lies under all the ground which has been
stopped. AS will be noted later on. the ex-
plorations north of the shaft on the levels
below the 500 have been very limited, but
there are abundant evidences OF the con-
tinuance of the vein.