The Salt Lake tribune. [volume] (Salt Lake City, Utah) 1890-current, 1913-08-17
REPORT Of JUMBO
EXTENSION ISSUED
President Van Dyck Replies
to Criticism Originating
in the East.

President Edward s. Van Dyck of the
Jumbo Extension company has addressed
a communication TO shareholders In re-
gard TO mine conditions and the pros
poets OF the organization. while he han
dies some OF the matters which have been
utilized in eastern circles for the purpose
or severely critclsinG the company ana
the management. Local stockholders will
be interested in this statement, which
here follows:
For the past month certain eastern
stock manlDulators have been devot
ing much space IN their market let
ters and in the columns OF promotion
organs which masquerade under the
guse OF mining newspapers, TO the
criticism OF Jumbo Extension and IT'S
officials. 1t is plainly evident to all
who are familiar with the methods
merely ,ndulging in their everyday
practice of manipulating the market.
All one needs to Go In order To eX
pose their schemes is 20 mention
Out of the mass of vituperation
contained in the publications referred
to- there can be singled out but two
Inconsistencies" They are that 81
mill ore was represented to run 500
per ton and runs but IS per ton. and
(2) extraction was represented TO he
90 per cent and Is In fact but 70 per
cent
Drop In Values.
Kindly look AT the report for June
Is. 1912 and you Will lind the fol-
lowing language used: "The average
value. according to samples taken for
milling tests. will be about $40 per
tom The manner in which IT was
concluded that such was the value
OF the mill ore was as follows; From
every point in the mine where ore
was exposed there was taken GER
a nj "a
cised 10 take from each place a guam
tity proportionate to the apparent
Size of the body. so that. by. mixing
all samples. the result would be truly
the mine. The assay value OF this
mass after mixing, was s26,60 per
ton. II seemed safe. therefore. to as
sumo that the average grade of the
ore would be about $50 per ton.
Further development has shown that
the workings then in ore were in the
best part of the ore bodies, and that
the average value OF the material, as
samples referred to indicated. AS
soon as this fact was ascertained. It
was reported to stockholders You
VIII find II in The report Of Janu-
that the milling ore averaged prac-
tlcally sS per ton and that the main
tonnage in the mine was composed of
this grade of ere.
was also stated that experimental
tests which have been conducted on
The ore now In sight show an ex-
traction OF over 90 per cent The
reports of these tests are still on file
and the results obtained were exactly
as stated 10 you. The person who
conducted the tests was generally
considered competent and the man
agenaent was guided by his reports
until actual milling showed that the
process recommended could not be
successfully applied. This was also
explained TO YOU in detail In the re-
port OF January 20. 1913. IT was
there stated that cyanidation could
not be resorted to, that the actual
extra ction was at the beginning so
per cent and had increased to S8 per
cent. and the rea sons for the failure
OF the mill TO do better were care
fully and clearly explained.
Troubles of Mining.
The only manner IN which the
aforesaid manipulators could make
these statements appear to be sin-
pOnSlStencieS bV faIsin,~ ne