Mohave County miner., 1899-07-15
The Dewey Mine.

'uiuou inSt lucSudy oNcHiuS iTOuu q
trip to the Grapevine mining district,
W ich has been att acting considerable
attention lately. Mr.. Roark is miner
of considerable experience, and it was
for the purpose of investigating the
district and securing good location,
il possible, that he made the trip. The
one thing above all Others that lead
him to have faith in the mines before
IN iking his trip, he said, was the fact
that Dennis Clark of Spokane had be-
come Interested in the property, and,
according to Mr.. Roark, Mr.. Clark
would never invest money in a mine
that did not show pretty strong indica-
tions of becoming bonanza.
Mr.. Roark told Union reporter last
night the result of his Investigations
in the district. "The Dewey LEDGE"
said he, ais one of the widest and bold
est have ever come across. would
rather have that than any prospect /
have ever found or have ever seen, and
have found some pretty good ones in
my time. The shaft on the Dewey
mine Is now down between seventy and
eighty feet and the intention is, ac-
cording to my informatiIn, to extend
it to 100 feet, when, if the richness of
the rock holds out, Clark will take the
mine, paying 3O,OOos cash therefor, and
also give the owners 100000 shares of
stock in the mine.
There is every reason to believe that
the sale will be made, for the improve
ment in the richness of the ore has
b,el very fast. On the top of the ledge
there was only 2.SOs worth of gold in
ton of rock, at twenty feet it had in
creased to 1Os, at 40 feet to 1Ss. After
that depth the improvement was very
rapid and the last assay, which was
m ide at a depth Of sixty feet, showed
134s gold to the ton. The improvement
seems to continue on the same scale,
and the next assay ought to show fig
ures considerably in advance of the
last test. The ledge is in contact for
mation--that il, granite on one side
and schist on the other.
"A person can seldom tell whether
the suIphurets in the rock will prove
rich or worthless, but Superintendent
Scanlon Of the Dewey mine told me
lot nhn NJ tim rrnQnnf
depth of the shaft are yellowish in
color, which is considered to be an in
dication of richness; otherwise the
worth of the sulphurets cannot be
d definitely ascertained. The work on
the shaft is being rapidly pushed and
the lO),foot level will probably soon be
reached.
II did not go the full length Of the
ledge on which the Dewey mine is To-
Gated, 50 l cannot tell from my own
knowledge just how long 1t is. Every
body agrees, however, that 1t Is over
twelve miles, and some estimates made
it as long as twenty miles. / think
can safely state that it is eighty feet
in width. A trench was dug on the
surface by one Of the miners and the
rock was uncovered for that distance
There is little free milling gold on
the top Of the ledge, caused by oxidiza'
ton, but further down the ore is en-.
tirely base. because no oxidization
takes place there.
"The strati6cation of that part OF the
country Is north and south, and the
Dewey ledge cuts through this, running
from northwest to southeast. 1t is al
ways good indication when ledge'
cut through the stratiflcation, and tina
is another reason why / have faith il
the mine. Thinking that the who'll
ledge had been located, started owe
the hills to see II could find SOM
other promising rock. About a hal
mile from the Dewy mine ! came t.
several small hills covered with grant
boulders.
"Granite il always considered poo
indication, but decided to prospec
In one of the gulches there, thinking
that, perhaps, the boulders were onl
cappings and that ledge might b
hidden underneath. was not mis-
taken, for l stumbled on ledge tha
ran almost parallel with the Dewey
and for all l know is feeder of tha
very ledge. AT any rate think 1t vii
run very close to the Dewey ledge.