The Salt Lake herald. [volume] (Salt Lake City [Utah]) 1870-1909, 1907-06-22
EXPERT TREWEEK
ON WEIMER MINE
Examines Property for Local
Operators and Makes High
Iy Favorable Report.

At the instigation of local operators
interested in the Weimer Copper COM
pany's property in Idaho. Captain john
Treweek, whose experience in copper min
ing is worldwide, has been making an
examination of the mines for nearly two
weeks. He has returned home profound
ly impressed with the magnitude of the
proposition, and briefly recounts his find
ings and impressions as follows
From the Valley View tunel 10 the
point where the contact crosses the gUlch
is about 1900 feet This stretch of
ground embraces the Valley View and
Spring City claims, On the north side
OF the canyon are the Silver Leaf and
Paymaster claims. All OF these claims
cover the contact The vein filling OF
ledge matter is a dark lime carrying
pockets of ore and crOss-flssures all filled
thickness from a few inches to several
feet, and make at right angles TO the dip
of the vein, /. e., from loot 10 hanging
wall The dip of the vein and contact Is
TO the north and east at an angle of
about i degrees, while the strike or
course OF the ledge is nearly east and
west. There is no doubt that the con-
tact exposed IL the Valley View and
Spring CITY claims on the south of the
canyon and that exposed in the Silver
Leaf and Paymaster on the north side are
enc and the same, the erosion of past
ages having scored out the canyon and
given the ledge the appearance of horse
shoe or half-circle.
Much Ore Near Surface.
In my opinion there will be much OF e
found on and near the surface of the
Valley View, enough to last for several
years, or until the east end of the con-
tact where it disappears on its dip I'M
der the mountain. is reached. believe
this ledge will go TO the deep.
The four claims mentioned are only a
fractional part of the holdings Of the
l.. - e 81. L..
of the same great contact Tor several
miles. as | learned in my Investigations.
These four claims, however, which cover
the ledge on each side of the canyon for
1900 feet. present the best showing at
present, rs here it is that most Of the
development work has been done. [
looked into nearly all of the open cuts
and drifts along the contact and in most
of them 1 found copper carbonate ores
of varying grades
Valley View Tunnels Showing.
The face of the Valley View tunnel
was in fine body of copper ore, and each
side and the bottom of the drifts and
tunnel were also in ore that was being
sacked for shipment Having spent many
years in copper mines in various parts OF
the world. including this country. AMI
having personally mined copper ores
should judge the whole face of ore in the
Valley View would assay as mined Is to
20 per cent copper The management
could work at least thirty men more in
ore along the side hill in the Valley View
and Spring City claims, but the same
conditions prevail in Idaho as elsewhere:
there is q scarcity of skilled miners.
There is a great tonnage of ore exposed
in the mine at various points which |
think would average, without sorting, cas-
lily per cent copper.
What is needed in that part of Idaho
is a railroad and a smeIter somewhere
Lear the mine / have no hesitancY in
saying that when the great contact is de-
veloped at depth a large and unusually
rich and productive mine will be made
The location of the property is an
ideal one There is an abundance OF
timber on the ground and four miles be-
low is a fine stream of water where power
can be cheapiy developed for the opera
ton of machinery, smelter and town re-
quirements. etc"