Tonopah bonanza. [volume] (Butler City [i.e. Butler], Nev.) 1901-1909, 1907-06-29

as they were originally placed; that
is, the later andesite Gaping or over
flowing the earlier andesite. The
shaft remaining i'm the earlier ande-
site or lode bearing porphyry from
$50 feet in depth to $50 feet in
depth, where it encountered a sill
icious intrusion which has been call
ed by Professor Spur, Tonopah rhyo-
lite dacite. The shaft continued in
this intrusion until it reached a depth
of ESQ feet, at which point again it
entered the earlier andesite or lode
bearing porphyry, and has continued
in this ore bearing formation until
the present depth of the shaft, which
is 1860 feet, and a diamond drill hole
has been put down to the depth of
1900 feet, which shows continuous
earlier andesite or lode bearing pcr-
phyry.
THE intrusive material called
Tonopah rhyolite dacite has about
the same angle of dip as u main
vein; therefore it was not expected
that our vein would be affected by
this intrusive material, but during
the latter part of 1906, when every
drift and stope in the mine was show
ing first class ore, the rhyolite dacite
suddenly changed in its dip and in
terrupted or cut through IL ore
body in many places, This Interrupt
ton was not anticipated. At first the
extent and effect of it was hard to
determine, until we had completed
more development work, and when
we were fully satisfied as to its eff
feet, curtailed our production ana
Immediately started in, by the use
of diamond drill, to prove the thick
ness of the intrusion and to ascertain
the existence of the lode bearing Dor-
phyry below it. This has been salts
factorily accomplished.
I'VE have above the intrusion
thousands Of tons of milling ore and
a great quantity of shipping ore, but
this is being mined in a conservative
way, which we will continue to do
until the crosscut from the 1850
foot level, which is now being run,
reaches the vein underneath the in
trusion. There is no question bit
what we will find this vein under
meath the intrusion. Our diamond
drill results prove this, and again the
Midway mine has found the vein II
place underneath the intrusion. II
other words, the effect that the in
~trusion has had, has been to inter
rupt the ore bodies, but not to Gu
them off. The thickness of this in
trusion is from 200 to 800 feet. Al
soon as we have proven the characte'
of the ore bodies underneath, we will
Immediately start the erection of
mill. We would do so now if W,
were satisfied the character of the or
would be the same as that above tn
intrusion.
"At the stockholders meeting. tn
board Of directors deemed it advis
able to inform the stockholders q
these conditions and to give them al
the facts as actually existed in tn
property. Nothing was withheld
from them. The result of this wa
that many did not understand tn
written and verbal reports as giver
and many foolish rumors were star
T ed regarding the veins being lost, ct,
while the past rear has no dout
, been a very trying one to the stool
: holders, owing to the fact that II
dividends were paid, still think til
5 policy of the company in accumula
: ing a treasury reserve for future o
e%rations a very wise one. Durir
the past year a great deal Of explor
ton work has been done, which
am sure will be of great benefit
e us in the future. and think that
k year from today will find a conditiC
e of affairs that will class the TOnopf
n Extension mine the equal of any
d the district"