The Pioche weekly record. [volume] (Pioche, Nev.) 1877-1900, 1891-12-17
'lEEE MINING ss'asT.
INSTRUCTIVE FACrs AND FI!.
UR-S fHOM LATE DATA.
A sy,tema fc Description Of the min
ing situ ,tion Here. The Yuba's de-
scripticR Ore Measurements. As
says Etc. The Three Veins.
CONTINUED FROM LAST WEEK.
mond Aud Ely Mine.
SURFACE IMPROVEMENTS.

SURFACE IMPROVEMENTS.
Foundry Equipment. -Cupola for
melting iron for castings. Melting hole
for brass castings. Core oven. Wooden
crane with twenty foot jib. Hand punch
ing machine for boiler plate. Hand
sheariug machine. "a
Pattern, Shop - Containing patterns of
all the wheels and castings which have
been made on the ground.
Machine Shop-Two lathes, one with
fifteen .foot bed. manufactured by the
New Haven Manufacturing Company,
and the other with seventeen foot bed,
practically new, manufactured by the
Putnam Machine Company, botn good
types; one planer, one drill press, one
screw tapping and cutting machine. one
small bolt cutter, one horizontal engine
for driving the machinery, and one fae
boiler.
The blacksmith.shop Contains two
forges one steam hammer anda Yale &
Towne differential block and fall, and
the necessary tools.
Carpenter shop, with four circular
saws and carriage for heavy work.
All the shops are well supplied with
the appliances necessary for all re-
pairs which are likely to be required
Shaft House. e.--The equipment is ex.
cellent and ample for much heavier
work than Is likely to be required in the
near fstura. The hoisting engine is OF
good pattern and thoroughly substan-
tial and ample for fully 1900 feet in
depth. There is also an independent
hoisting engine for handling the pump
column, also Cornish pump with H.
inch column, and large horizontal engine.
A double cylinder Burleigh air comp
ressor. Eight tubular boilers. .aE
One Blake sinking pump, capacity 400
gallons per minute. sIee,
The shaft, know as the Lightner shaft,
has two compartments, one for pump,
including ladder.way and small gage,
and the other for cage Of the usual di-
mensions, to depth Of 900 feet, and be.
low this has been enlarged for three
compartments. Total depth, 1000 feet.
and an so foot sump. ase =
:" There is every evidence of the shaft
and its connections being in efficient
condition. The shaft is sunk on ths
south side Of the lode and cuts it f2r
feet in depth, and continues in quart
zyte. thus insuring great solidity, a.
there is no great stacking or moving Of
this character of rock.
With the exception o some limited
workings on the 700fooC ie, ei, the level,
above the l200.foot leve,on the. Ray
mond and Ely vein are prao.,cally work
ed ont.
The station at the 1900 is type OF tn,
best mining work.
| A CROSSE cut over 200 feet in length
has cut the Black Ledge, vein III
quartzyite adjoining the porphyry dixie
and nearly paralleling the Raymond an.
Ely and Meadow Valley vein.
r. Examination of Black Ledge.
| 1900 FOOT LEVEL.
J! From the cross.cut there is an uprais,
Of AZ feet into the Black Ledge, and from
the head of it drift has been carried
east "a feet. with ore in the bacl
averaging feet solid in thickness. Th'
height Of the back above the floor pre-
vented sampling for more than feet il
length. . s.sq, -
/ No. 4S. Lead, none; Silver, &C. so oz4
Gold, OPS ozs. r. ~ .,s j.
The vein narrows somewhat going cas-
and there are intrusions of country rock
For the entire exposure the hanging wa
. 10 vertical and well defined, while tn
/. foot wall is much broken and irregula
The ore mass is very hard and mos
difficult to break with hammer and gao
Its massive and clear definition is mos
impressive feature Of the vein as far 3
' exposed on this drift, east and west
4 the winze. Lack Of ventilation proven
Q ed an examination cf the ledge west ),
a. the winze, as far as it could be seen; no
. ever there is an uninterrupted body
j. ore in the back, which, / am informs
i. extends as far as the end of the drif
. Just east Of the upraise by which tn
.e drift is reached from the lower CROSSE
]Aiwinze has been raised about $50 fe
y which would intersect the 10th level h'
Z II been extended on the. Black Ledg
{ { The Meadow Valley level has be-
driven and cross.cut carried over to &
. Black Ledge, coming into II at the win
: by this means ventilation has been {
cnred.
,e CONTINUED IN NEXT IssuE.
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