Honolulu star-bulletin. [volume] (Honolulu [Oahu, Hawaii]) 1912-2010, 1917-10-05
Optimistic Reports on Prospects
Received BY Stockholders
From Expert Lawson

Another optimistic report regarding
the Fortuna mine has been received
by the Hawaiia stockholders OF the
Montana Bingham Consolidated Co.
This report has been submitted by A.
Werner Lawson. a mining engineer,
who is a son of Professor Lawson OF
the University Of California, highly
rated mining authority. The report
follows:
u take pleasure in advising you that
in the Fortuna portion OF your hold
ings you have a property Of very great
merit and one in which the recent de
velopment, though somewhat limited
in las scope, has met with extremely
gratifying results and has proven com
raratively large tonnages OF ore in
sight which only few months ago was
considered as probable. Furthermore,
ii has caused other tOnnages TO ap-
pear much more highly probable than
was possible to estimate at that time.
Recent work IN the continuation OF
the Montana Bingham tunnel has like
wise met with very encouraging and
promising results in that the presence
of secondary chalCoCite in the quartz
tie has been definitely proven at this
horizon which is 400 feet, on the dip,
below the upper Fortuna ore body.
This fact establishes an extremely
iustifiable presumption as to the pos
sic indicated ores to be found be-
tween the Montana Bingham horizon
and the Keystone level of the Fortuna
mine which had hitherto been consid'
cred conpectural.
These conclusions are based on OBJ
servations made in the various work
ings of the Fortuna mine and Montana
Bingham tunnel with a study OF geo
logical and meteorological conditions
necessary to an appreciation of the de-
veloped and indicated ores and their
probable and possible continuation
and extent The conclusion as to val
ues in the disseminated mill ore body
are based upon the results Of the aver
age daily mill run of all the ores
which have been mined and milled in
the course of development together
with 55 check samples taken at vari-
Gus points In the ore as indicated on
the accompanying compass sketch
plan which ] prepared. My samples
are in very close accord with the daily
miIl-head average of 2 per cent AMI
this figure is taken as fair average
of the copper content Of the ores.
Concentration Mill.
THE concentration mill has been
under construction since June and is
rapidly nearing completion when it
will have a daily capacity of 200 tons
or more. For the past five weeks it
has been in operation on a limited
scale treating so tons daily, the re
quits OF which have been very crafty
ing. Even with the incomplete equip
ment good extraction is obtained
and good grade Of concentrate made.
When operating at full capacity 1t will
place the property on a paying basis
sufficient to make payments on the
property and carry on the develop
ment necessary to further open up and
prove the limits of the ore bodies.
My conclusions as to the merit of
the property are based on the fol
lowing findings:
"taD Recent mining operations
have proven up and placed in sight
ore, Immediately available for milling,
between No. Z and No. 10 raises and
to a height varying from 20 to 250
feet and width of 20 feet making a
tonnage of at least S0,666 tons having
net value of 100000
"{b) Further tonnage adjacent to
this of highly probable ore give an
additional $4,000 tons.