The Pioche record. [volume] (Pioche, Nev.) 1908-1925, 1920-01-16
MINING HIGH GRADE ORE
in THE PACIFIC TUNNEL

w. ID. Price. leasing In the Yuha
dyke territory. adjacsat to the Pa
cine tunnel. recently struck high-eraAs
silver-lsad ore In the winse which 1,
sunk from the tunnel lsvol In the nor
phyry dyke. This wtnxs. which n
about eighty feet deep. follows the con-
tact OF the porphyry and the Quastsits.
and although small bunchss Of eooA
ore were taken out In sinking. mo- hoA.
les OF magnitude were opened I'M. Nr.
Price. who is familiar with the forma-
tion In this territory. recently started
drift NJ . depth Of sixty feet h the
wtnxe and before long was taking out
nice tonnage OF stlver-lsad ore, the
nrst car Of which he will shortly send
to market.
The ore. which IL the typical lsaA
product such N was produced In the
xuoa mine In the early days, assay
a. follows: Gold. o.: silver. Ss.l
ounces: lead. 34.s per cent.
Two men have been added to the
force and although the high-grade
streak Ii about the same width ~ when
nrst struck. the face Of the drift 10
now completely mineralized and A..
says or the sscond-class ore made thlo
week averaged - follows: Gold, %:
silver. s5.s ounces. ana lead 1l.S per
cent. . nice product itself consiAering
the present high price Of mstals
The old Yuba mine. with which the
Pacinc tunnel connects. WAS . heavy
producer some years ago. End right
above the tunnel the ruins Of the
smsltsr built to treat Yuba ore stili
stand.
| Only one orsshoot was WORKED sE-
tensively In the Yuba mine, extsnding
from the surface down to the S0O-soot
level. and from this oreshoot . total
production close to e1.OO0.ooo was sx-
tracted and all the second-class ore
was left In the mine.
A second shoot Of ore was found On
the bottom level at . vertical depth of
1900 feet from the surface. which was
stopped upward to the tenth lovel, when
all work was suspended owing to Z
sudden cavein In the shaft. The ere
In these shoots varied In width from :
foot ana q half to eight feet and main-
tanned an average length Of 100 to 1eo
feet. with ore In most Of the faces
going down strong below the bottom
level
The continuity and increase In 81
tent OF naturalization with depth, q
shown in the Yuba, argues well for the
future yield Of the porphyry vein here,
as well AZ throughout the entire ter
ritory. Comparatively little work has
been done or exploration made ON this
vein and its possibilities Of production
even above water level should csrtain-
!ly be, great.
The old Yuba company's books show
that ore extracted from the Yuba mine
and shipped to Salt Lake for treatment
assayed from 100 to 800 ounces In sill
YER. with 40 to so per cent of lead con-
tent. A smelling lot OF I'll tons. un-
sorted frst class. smeltsd In Phoebe.
assayed: Gold. -; silver. SIS ounces:
lead. 33.5 per cent. The second class
or concentrating ore left In the mine
will run from twenty to thirty ounces
in silver and from to u per csn9
lead per ton and containing about So
per cent silica. An average sampls Of
the heavy base ore found In the low :
est level of the Yuba mine ran - fol-
lows: Gold, -: silver. e5.5 ounces;
lead. 10 per cent; copper. 21 per cent.
zinc. 2O.4 per cent; iron, 1915 per cent
silica, 35.6 per cent; sulphur. 10.e per
cent. The character Of the ore II the
same as that found throughout the
porphyry ledge.
1t 10 to be hoped that the high-gradu
ore struck by Mr.. Price will encourage
. other leasers to further prospect this
Interesting and productive territory,
. which was only partially developed Ii,
the early days.