The San Francisco call., 1896-10-20

there was extracted from the 1000, 1850 and 1850
levels Of the mine 1858 tons and 1880 pounds of
ere from which was produced bullion OF the assay
Vaiue OF 81 1888 AZ OF which Sl0S. .306 40 was
gold and Sl03,027 O4 was silver. The coin value
OF the bullion was $l60,6S6 IL. The ore shove d
al average yield OF $29 SO per ton. The superin-
tendent reviews a. length the prospecting and
other work done during the year on the 1000
looo and 100 foot lewis of the mine. Referring
70 ehe so-caed burnt district and the gas trou bes
therefrom, he says: "un June gas dis
covered escaping from the south end OF the
ola slopes on the tenth floor above the 1850
ieVeL This trouble started from some point
IN the old stope south of our openings, which
gas We closed the south end of the opening from
the u 90 level by filling the open slope space from
Wnlcn all the ore had been extracted with fine
Iock ana applying enough water TO saturate and
uamFen the ground and old umberS throughout
this part of the mine South from the old on.
Virginia shaft water turned into the Old drifts
and crosscuts the 1900 and 1850 levels This
water has percolated through the closed drifts and
crossciits where men could not 90 ana has un-
ooubtedly reached the point where the fire arted
as we have had no iurther trouble from escaping
gas since June and July. The origin OF the fire
convinced, however, that it caused by 81 ound
pressure continually crushing and splintering the
s.ope hmbers, creating an intense heat, which
caused the dry tin bers TO ignite.
The water has risen 1912 feet in the c. and c.
snait during the past year, and Is now up TO
l1OO level. The Sutro tunnel connection with this
shaft is 101a feet above the 1850 level sill foor
Referring. 70 the old Slopes from the eighth 10
the wenty-fifth floors above the 1850 level in the
northern Fart of the mine, the superintendent
slopes have all been worked with profit. Consid-
cradle ore from these old slopes remained to be
extracted"
no important news this week. In the Hale q
Norcross mine (Comstock workings). on the 800
level, from No uprase they worked south on
the fourth, fifth and sixth floors On the fourth
floor the streak is small. On the fifth and sixth
floors they have several streaks of low grade, but
promising Started west cIosscut on The sixth
floor and advanced the same 5 feet. Made neces-
sary. repairs on this level the past week. HOO
level-Sunk the winZe feet. The bottom is in
old filings and porphyry. Extracted during the
week from the 900 level 10 carloads Of ore assay
ing, per mine car samples, Sl2 in gold and 20
BRUNSWICK LoDE-Con. Cal. & Va. Best &
Belcher and Gould Il Curry-Shaft 2-This shaft
was sunk IA feet on the incline; total depth 463
feet; bottom in porphyry. Tunnel-The main
tunnel has been advanced ~ feet, passing
through soft porphyry; total length 997 feet. he
joint west crosscut the Best & Relcher south
boundary has been advanced 13 feet total length
50 feet: face in porphyry.
HALE IL NoRCRoSS-s i has been sunk Is
feet on the incline; total depth 657 feet The bot
tom Is in porphyry and quartz 400 level-Ad-
vanced joint Norcross-Choliar south DRIFT 20 feet;
total length l43 feet: face is in porphyTy and
quartz. Advanced joint INCONSISTENCIES north
drift gS teet End timbered the same; total length
joint (four companies0 upraise in Chollar ground
was carried up ID feet: to:al height 70 feet; top
in porphyry.
Chollar-Shaft has been sunk 15 feet the in
cline, and is down 657 feet. The bottom shows
value. 200 levei-1he joint orcross-Savage
Chohar Potosi vertical double compar. ment up
raise is now up 70 feet, having been advanced IA
Ieet for the week. The top is in hard rock. 300
level-East crosscut l, So feet south of the north
line. was advanced 20 feet for the week; total
depth SO feet When in 81 feet 1t cut small
stringer similar TO those reported last week. and
when in 54 feet 1t encountered width of g inches
of good ore. assays going from $40 to $50 per
ton, half gold The face is now in porphyry. 400
level-The joint Norcross-Chollar south drift on
this level is now out Az feet, having advanced Il
" g N q
composed of porphyry and iow-grade quartz.
OCCIDENTAL CoNsoLIDATED-55O level-The
upraise from north drift from east crosscut has
been timbered and extended 25 feet total length
SO feet; top In quartz of low assay value. The
main east crosscut this level has been extended
35 feet through hard porphyry; total length 385
feet. $50 level-The west crosscut from The bot
tom of the winZs has been extended l5 feet: total
length % feet AT point in said crosscut 22 feet
in cut q streak of ore feet vide OF fair grade
and the face OF the crasscut is now in porphyry
with small seams OF quartz