The Salt Lake herald. [volume] (Salt Lake City [Utah]) 1870-1909, 1908-12-27
Marvellous Riches in the Nevada-Douglas Yerington

comes in contact with massive granite.
The mineralized portion is in garnet
| lied lime, which forms the g2ngue ma
terial and which covers 4 large area.
On that portion known as Douglas
| hill the mineralized outcrop has an
area of 100000 square feet On the
brow of the hill the entire mass has
| $50 samples taken over this area show
a general average of yer cent cop
per at the surface.
i In this portion of the mine tunnel
| has been driven 600 feet. Raises from
| the tunnel level to the surface are in
| ore and wines sunk beneath the tun-
| mel have developed 100000 tons of semi
| sulphides averaging throughout 6.5 per
cent copper. The elevation of this por-
ton is some 800 feet above the valley.
Main Deep Tunnel.
On the Casting Copper claim has been
started the main deep tunnel, which
will penetrate a mineraliZed section
similar to Douglas Hill, and at 400 feet
| length will be cut at 500 feet depth the
ore bodies exposed in Douglas hill. Very
large results are anticipated from
opening the ground at that depth.
But probably the greatest develop
ment in NeVada-Douglas is in what is
| known as the Ludwig section of the
property. The properties comprising
the Nevada-Douglas group have been
worked at intervals since 1860. During
this period the Ludwig has furnished
the mint at Carson City, thirty five
miles away, a great deal of copper for
making alloys. The mine was worked
on the surface levels for the high-grade
copper carbonates. when nothing short
of 50 per cent copper ore could be
worked at profit.
| The larger portion of the Ludwig
. outcrop, of 1900 feet length and from
| seventy-five to 100 feet in thickness,
has been worked by shafts and incIines
down to 700 feet depth. The surface
| outcrOp is largely leached iron gossan
! material, except for occasional punches
of high-grade ore in the gossan and
well defined streaks of high-grade run
ming from a few inches to two feet in
width.
The thickness of the richer streaks
and the frequency of the high-grade
| punches throughout the gossan in
crease with depth, until at the 400 level
| a well defined body of carbonate some
twenty feet wide is exposed. One-half
of this is graded to admit of shipping
direct to the smelters, and great deal
of it. running better than Is per cent
copper, has been shipped
On the 500-foot level almost the en-
tire body of gossan material shows val
ues; the difference between the high
grade and the second-class ore is not
nearly so marked. Twenty-Five feet be-
low this level appear sulphides in the
| form of chalcocite. covelite, chalcopy-
rite and bornite.
The largest development has been
done on the 500-foot level. Here the
gOSSan has entirely disappeared and in
! its place is good sulphide ore of COM
mercial grade. The ore body has been
! opened on this level for 500 feet in
! length, while four crosscuts, averag ing
sly feet in length, have been driven,
and the width of the ore is not yet de-
termined. Assays taken every five feet
along the cross-cuts and drifts show a
general average value of fully 6.5 per
cent copper. with 100000 tons of devel-
| oped ore in sight
On the 650-foot level the same ore