Bisbee daily review. [volume] (Bisbee, Ariz.) 1901-1971, 1908-11-04
ISLE ROYALE
AS ESTIMATED
BY WALKER
Well Known Writer Goes Into
Great Detail In Describing
This Well Known Mining
Properb-His Conclusions.
,Rr G. L walker.l


ing out one of the most ambitious
plans for extensive operations that
has ever been undertaken In this dis
trict- II is now plain that the man
agement is satisfied as to the valae Of
the OLD Isle Royale lode and that. Il
proposes to work 1t on sufficiently
large scale to make II pay substantial
dividends on the company's stock.
A few words of general ex9lanat On
will be interesting to many. The Isle
Royale lode was among the first TO be
discovered in this district. At enc
time and another half dozen differ
ent companies have organized and
tried TO make money by working it.
but all operations 50 ia- have RESTED
in failure. Several million dollars of
the public's money has gone into
these undertakings. during the past
forty or fifty yeavs AMI not one diyi-
dend has been earned and paid.
The present Isle Royal company
was formed nine years ago, taking
over at that time the Miners Copper
company, which owned a large area
Immediately to the south, and which
had million dollars in it's treasury.
Altogether the Isle Royale has eX-
pended about $1,000 900 in explora-
tons, development work and equip
ment. 1t has been producing copper
on small scale for seven or eight
years past, but the cost has been dis
couragingiy high, averaging approx
mately IL cents per pound.
About four years ago the manage
ment began diamond drilling its prop
erty to the south to locate the extern
sion OF It's lode through the or nlrG
taken over with the Miners coTD&ny.
Ii found the lode and since mas OPEN
ed two or three shafts on it. The new
development has proved conclusively
that the lode increases in richness
somewhat as it extends to the south
and is more evenly mineralized and
wider than It is nthe hill just south
of Portage Lake. close to the city of
Houghton, where all operations were
conferred in earlier days.
During the first few years of its
career the present Isle Royale com
pany expended very large amount
of money developing portion of this
lode which did not contain copper in
paying quantity. Indeed, large area
was opened up which shows little
more than a trace of the desired min.
eral. When its No. 1 shaft was de-
stroyed by fire 1t was permanently
abandoned, furnishing all the testi-
mony required to prove the absence
of commercial values in that portion
of the property. No. 2 shaft has since
supplied nearly all the rock that has
gone to mill. It has been sunk to q
depth of $500 feet and has demoa
strated the fact that such values as
exist in the lode can be depended or
TO go down
Shafts 2, 4, and 6, waich are to bt
its future big producers, command
about two miles on the strike or length
of the lode. They are being equipped
with the heaviest and most approved
hosting machinery, and compressor
already in commission and being erect
ed will operate approximately 100 com
pressed air power drills. The com
pany's own railroad has been extend
ed to all of these shafts, and the worl
of grading for an addition to its three
head stamp mill has begun. 1t Il
hardly probable that mill construction
will begin before the latter part o
next year, however, as its present ca
paeity is about SO per cent in exces
Of it's current output.
1t is both the apparent and the an
nounced plan of the management b
push the development of the Isle Roy
ale lode until 25 to 80 miles OF drift
are opened, until lode area of 1000
feet long has been developed to
depth Of 200 to 1900 feet, and meal
while to gradually increase its produ'
tion. Although the work is well III
der way already, it will require tw
years more to carry 1t to completion
but If results come up to expectation.
Isle Royale will produce upwards O
10000, 900 pounds Of copper in tae yea
1910. and, IL its product sells for 1
cents per pound, 1t. should earn b
tween $s5o.000 and 100000 ne1
equivalent to s6 per share on IL
$50, 000-share capital.
/ say ''if results come up to expet
tations'' II is wholly possible tina
they win not. but it may be that e.
pectations win be exceeded. There
good geological basis for the belle
that the Isle Royale lode may develo
very valuable mine In the south en-
of the company's property. A COZ
tinuang increase in values in that d
T6CllO91 NAY lCdl4 Tue LudHdBcLncHl !
sink a No. z, and possibly a No.
shaft further on TO the south, theT
being plenty of room for them o
the property. Present holders of "a
stock may live to see Isle Royale pr
duce 10000, 900 pounds of copper in
year and earn as much per share o
its stock on 15-cent copper as D
ceoaa could with its present prodd
ton. This is possibility, not a &c
.tainty.
The way / figure the Isle Royal
proposition out commercially is q
follows: The lode averages II or
feet wide. As &c takes about IL cub
feet of this rock to make a ton, taer
ia in the 10000 feet long area pr
viously retired TO 1000, 900 tons Of lot
rock for each 100 feet Of depth. II u
lode maintains its width to a dept
Of 5000 feet. therefore, 1t contains 81
600 900 tons of rock According
the best opinion, just about one-thir
of t;,is rock Is rich enough to be mine
and treated commercially. BY son
good mining men. familiar with tn
ioae however, II is estimated that ne
over 25 to so per cent viii actually Q
70 the NIL Therefore, figures muf
be made,on the basis Of 100000