The Salt Lake tribune. [volume] (Salt Lake City, Utah) 1890-current, 1906-12-02
REPORT MADE ON
BIG COPPER MINE
Maurice M. Johnson Expresses
Faith in Western Nevada
Copper Property.
MINE OWNED BY
SALT LAKE PEOPLE
Plan of Development Outlined
by Which Success May
Be Secured.

An interesting item in the life of the
newly-organized Western Nevada Cop
per company was the presentation on
Saturday Of Maurice NJ. Johnson IS re-
port to the president and directors re-
garding the property of the company.
1t will be recalled that tho Western
Nevada company owns some of the
splendid ground at Yerington, the
claims being the Luck Boy, Sure Shot,
Dewey, Twentieth Century, Twentieth
Century No. 2. Eureka, Enterprise and
Spring. This group is located FIVE miles
southwest from the town of Eerington.
In speaking about the geology Of the
property, Mr.. johnson states in the re-
porti
1.-The geological structure of the dis
Etrict in the immediate neighborhood
of the property is quite simple-consist
ing of a belt of limestones trending
inortherly and southerly, lying in direct
contact with an extensive mass Of gran
litic rocks on the east and south. M
merous assures have been formed in va
'Tious directions, no doubt the result of
great pressure and uplifting by the por-
lphyries and GRANTEES. Continuing to the
north along the strike for n distance
of two miles the limestones follow in
regular order, showing the same altera-
lh4'G 1bi uoouiihE 'iiipbEH iht Jh''ph-
nell Mining company, Mason Valley
Copper company DeLamar s Bluestone,
Nevada Douglas Copper company and
Iudwig properties.
"The deposit covered by the Dyer
group is approximately 1000 feet wide
by 24o0 feet long. The principal min.
eralized section so far as has been de-
fnitely defined by open cuts, trenches
and tunnels is on the Lucky Boy, Dew
onI Shn. ola
an area 600 feet wide by 500 feet in
length. With the exception of one or
Two places In the tunnels the ores are
mainly carbonates -
After giving the manner Of previous
development of this group, showing the
character of the ore bodies to be in
size and richness equal to many of Yer
jngton S noted resources, Mr.. Johnson
gives the following results of his sam
pliDg:
In the Dewey tunnel: No. l. Ore
2.5 per cent copper for 90 feet wide by
20 feet in length.
No 2. Ore per cent copper for 25
BY 40 feet.
No. 3. Ore ? per cent for 43 feet in
width.
No. /. Ore 2 per cent for S feet in
width.
The tonnage average value for the
above is % per cent.
Dyer tunnel No. l. Ore (sulphide)
OIL per cent copper for 20 feet in width
The small percentage Of copper shown
An this ore at the point where IL was
crossed is not discourag1ng, but it Is
one of the characteristics of this type
of deposit. Drifting on the ore will
TO a reasonable certainty show an in
creased percentage. Under the head
of general remarks, the report contin-
ues:
''The work so far done upon the
property has been more in the nature
of prospecting, rather than the block.
ing out of ore. Owing TO this it is i'm.
possible for me to go into figures of
available tonnage with any degree Of
accuracy. However, with due regard
to the surface openings Immediately
above and to the north of the mine
workings it is reasonable to assume a
large tonnage could he blocked out with
9 small amount OF development - After
going into the matter TO brief extent
of ore concentration, Mr.. Johnson
takes mp the matter of future develop
meDt. and recommends course of ex-
ploration which will develop the ore
bodies and serve to ventilate the mine
as well. The Dyer group is so situated,
states he, that economical working is
assured. The present splendid showings
warrant further development and explo-
ration. and he recommends the group as
2 mining enterprise Of unusual merit
and promise. II It's development is fol-
lowed out along the lines he suggests.
the property can hardly fail TO produce
satisfactory results