Eureka daily sentinel. [volume] (Eureka, Nev.) 1871-1887, 1877-10-02
NEW TODAY.
Ebefhardt and Aurora Mining
Congratulated.
EBERHAsDr, Nevada, July n, 1877.

10, hnkei Soat, bohuoh, .. ~, Lnkihuu.
DE,s SIR: My weekly reports and regular
accounts forwarded have given the Board the
main features OF our operations and progress.
Our d~rivings for ore ut all our prospecting
points are being vigorously pushed. The
Boards earnest suggestion that every streak
of ore in the old workings. ard every avail
able pound be broken. is receiving my decid:
ed attention. The ore rock, broken and
hoisted last winter aud spring, is now mostly
assorted, and as shown by my last weekly
report, we have 800 tons Of ore on the mine
DUMP! and have four men still prospecting
and breaking whatever Ct ore can be found;
but | cannot say there is any showing Of
much promise at any point Of our upper
workings.
l am, therefore. vigorously pushing down
Of finding ore il possible. The main incline
on Saturday, the 2.st instant. had reached q
depth OF l,0ls feet from the bottom of the
Coutral shaft, or Including the shaft. 2s7
feet 1905 feet from surface.
In paragraph 5, my No. 2G. | fully stated
the general situation OF affairs, and posili N
Of the foot wall Of the led o as rel tied to the
Incline. Ou. cross cutting east at that time
had deveIoped the tact that on the l,OOo-foot
level the wall was distant east 10 Get, and
distant on the ll00-foot level. IS feet. Our
further prospecting east on the l.00C-.Iot
level has developed no pay ore, our driving
having reached east o. the wall 9 feet into
the ledge mattor and east lime roci, with no
Nhtt f'NFBNths - ~ FViht
is now suspended.
Comparing the distance Of tue wall from
the %ineiine, as found on our ~,000-foot and
i,lOo foot levels, showing in the l,ioo-ioot
the incline again., l did ho e that in our L.
2O0-foot cross-cut east we would find the wall
still nearer. Bat the fast now demonstrated
is that the wal upon this l,200-foot level is
distant from the incline 20 feet-l0 feet more
than upon the l.O0o-toot level. Such being
the case. / last week com % or ced chat ing
the course Of the ~iscline, and shall gradually
bring 1t from its angle Of 80 to a less angle.
until the wall is reached. We thereby hope
to eventually bring the incline and wall to-
gether again. The chang, must be gradual,
IN order to not Interfere with the running Of
the car.
BY Of the board partition extending
down the Incline, the circulation of air con-
tinues excellent; Nc water intcrforos with
our working. Il should think mott
1t IL unfortunate to be sinking in the west
line as we are. tor it does not continuously
prospect the edge az il would If wc we're fol-
lswing down the wall. o. even a little east Of
1t; ard. again, our present sinking is in very
hard rock.
The | ,2Do-foot cut is now 8 feet be-
yond the wall, in low grade lodge matter.
but no pay ore. We deem it best not to com
mence another cros.-cut until the incline il
down 80 feet. SINKING is progressing at
the rate Of 10 70 IL feet per week.
In our 7JO-toot Lowell work is continued; we
uhft uIlllfu uOIt1 upbn tue wall 80 Zee f, ana
Enthusiastically encountered the same displscc-
M Mt Of the ledge that we found upon the
SO foot level, where we had to cToss-cut east
10 feet before reaching the dIsplsce wall.
The break upon thi 7j0-ioot level Is quite as
well defined; tn last > 10 feet OF our driving
north Is very loose and broken, which
brought us against solid lime. At this point
| have commenced u cross-cu, east. following
in the breas, TO determine the exiont Of the
movement at this depth.
The lp6lcations uDpp this laval M shawn
along our drift north, were very favorable
Tor ore; and whom tn displaced wall is reach
ed again, prospecting will he followed. u the
showing continues favorable. As the ground
along the break is easily worked. good head
way In the cross-cut Is being made IL feet
are already run.
The general outlook in the mins for immo-
diateiy finding ore is not 80 promising AZ We
could Wish, but believe ali is being done
that possibly can be for tho development Of
ore; and my faith that il will event unlly be
reached is undiminished. i. therefore. feel
that il the patience Of the Company fails not.
our hopes will b. realised
The 90 tn % the Blu bell shaft is 200 feet;
from the bottom Of same our south drift is
prog ressing at the rate OF 10 to " ieot per
week otal distance on the 2l-t instant. 81
this work. Although the entire length of
the drift Is In ledge matter quito favo able
for or and run along a spar wall altogether
assuring me that we are in the maui ore
channel yet. | regret to say. we have not
struck pay ore. A5oss important Obj Get Of
running the drift is now gained, namely. tho
position OF tho ore channel, the dip of the
wall, and the character Of the ground. ] shall
not. unless ore IL ,ooa developed, continue
the drift but a short dist 4nce further.
Length Of tunnel. . ade as follows, viz:
To Decem her 3lst, 1876, 525 {, ct.
Cost o.
Or ner lineai loot, s.S.42.
During tbs hall year. June Goth. In, SIS
fAat InAf nf aamn k1l lH1 TN
Or per linear foot. $3j W.
Total ieT 9Th OF tunnel June 30th. 1871, $40
feet. Cost OF same...~""-.-~-si5,5iJ rs
Or per linear foot. $3.50.
Inc tunnel works to June 18th cost,
and were valued SIS, 900
included in tho plant are The water tank
and pipes 10 mouth o tunnel. the engine for
repair work formerly the tramway e%ngincl,
tbs air drills, electric battery. and leading
wires.
he cost Of all completed tracks, including
I rails. and cost of all water pipe and air
pipe leading in from mouth OF tunnel. and
cost Of oil lumber that forms the air ase. is
eh 'rged into the running expense OF the
tunnel to The Oth Of June. therefore ipclud-
ed in the foregoing statement Of tunnel
costs.
The expense Of running the tunnel has
thus far exceeded my calculation and over
reached my estimate 10 the Company. name
ly. s2b per linear foot. But this Is not news
to the Board; for my frequent letters and
regular accounts forwarded show our pro-
gress and the true c,ndition OF affairs.
This excess of cost above my estimate has
perplexed me exceedingly. and prodigiously
suzzied me in ali my efforts for an i'm
provement. The average ground through
which the tunnel has passed has been hard,
but il has broken fairly; there is no likelihood
we will ever encounter rock harder or tough
or. But the CHIEF draw back to our efforts.
has been the lack of ventilation, too much
time Of the men and drills being lost after
each blasting in driving back the smoke so
that the men could resume work, for the full
current Of air from the compressor proves to
be quite insufficient to expel the smoke read
lily; even when driven bnck from the imme-
date face, the tunes have hung In the tunnel
something ike the Jog in the streets Of Lon
don. The excellent ventilation obtained in
our incline by means Of the board partition
led US to hops that thr same appliance in the
tunnel, forming a iue along the back Of the
tunnel. might serve our purpose, and thus
obviate the expense of any air shaft OF
blower.
The fue has worked fairly. but not quickly
enough air circulating through it almost
im~perceptibly as compared with the current
produced in the incline. To incur the loss OF
as little time as possible. msn have been
pressed TO their work before the smeke and
fumes were properly ex pelled. and many
headaches and other sicknesses have bean
the result; thereby some Of my best workers
have felt compelled to leave our employ.
With all our efforts to avoid il, as the length
Of the tunn el has increased, the fact has be-
come more and more impressed upon US that
kattar -art,l.,. .n.st ha ha1 and fha lonp-