The Arizona copper camp., 1916-08-11

grade ore. BY utilizing supplementary
| milling appliances-soon to be installed
in the company's plant-the greater
portion of this tonnage can be re-
the strike of the old ore bodies to
reach the footwall of the Cave 81
feet of pay ore was encountered. Fif-
| teen feet of it assays SIT gold per
ton. The remaining % feet, while low
grade, has commercial value. The ore
stopped from this deposit milled $9SS
gold per ton.
| The same ore body has been opened
on the sixth level $50 feet below, by
crosscut S5 feet long. Two vains-
one pitching to the east and the other
| to the west-were tapped at that point
Subsequent development. demonstrated
that the ore body on the fourth level
was formerly by the juncture of these
tveins just below the floor of the level
The west vein, where undergoing de-
velopment on the sixth level, gives
assay returns of from Sc to $22 per ton
The ore taken from it milled trifle
has proven to be the downward ex-
tension of the old Bonanza vein of
which the Castle Garden and Bon
anza" ore shoots were part Con-
nection has been made with the deposit
opened on the fourth level by Wine
from above and an upraise in ore
Strike Copper Sulphides
i An air-hoist was set up on the sixth
level and winze sunk 80 feet in ore
to the seventh level. These drifts were
run on the vein, north, 40 feet, and
south 80 feet. The pitch of this ore
body is to the south. 1t was in the
south drift on this leyel that copper
sulphides first made their appearance
Check assays demonstrate the ore
carries about per cent copper and $35
gold to the ton AS the copper sulphide
section lies against the footwall of
the vein directly beneath the oxidized
ore opened above, and pitches rather
flat to the southwest, the winze was
sunk an additional 80 feet and the
eighth level established
On the eighth level drifts were run
north and south in the oxidized ore
One hundred feat from tho sta tiop con
per sulphides were encountered in the
south drift. The crosscut run at that
point shows an ore breadth of sixteen
feet, with the copper sulphide section
along the footWan carrying ore of the
same grade as that opened on the
ievel above. The oxidized area on the
ton, and for a length of SO feet car
ries gold values as high as $48 per
ton. Later the drift on the seventh
level was pushed forward in the. oxi-
died portion of the vein and at
point 80 feet from the station cut the
same ore body that is opened on the
eighth level. The crosscut there shows
ten feet of ore which yields $12 gold
at the millheads. winze was sunk
in ore about 40 feet, an upraise was
made from the eighth level to con-
meet Herewith, and an intermediate
level established. The ore in the latter
has width of twelve feet
Ore Body Is Widening
The drift on the seventh level was
then extended beyond the winze a
length of 210 feet, giving it a total
length of 300 feet. For the last 25
feet the ore has gradually widened out
the drift, with neither wall in sight.
A crosscut will be run to determine
it's breadth Recent assays give re-
turns of $21.40 gold-si per ton.
This is the latest development of i'm
portance, inasmuch as the drift is now
being driven under the old castle
Garden" stope from which the valuable
ore tonnage before referred too was
mined That the ore body being de-
veloped by the present company will
prove of considerable size is appar-
ent as it has been opened a length of
As feet and a width of ten feet on the
seventh level, a width of twelve feet
at the intermediate level and a width
of sixteen feet on the eighth level
The work thus far done having dem
onstrated the presence of extensive ore
bodies in the new workings along the
strike of the Bonanza" vein, the com
pany is planning for much more ex-
tensive mining and milling operations.
These plans include the sinking of a
three compartment vertical shaft in
order that ore may be mined more
economically and to better advantage
than is now possible and the addition
to the 40-stamp mill of concentration
and flotation units to reclaim the gold,
silver and copper contents of the sui
phide ore, as the present amalgama-
ton plant is capable of treating only
the oxidized ore exposed on the upper
levels.
KEEP THE KIDNEYS WELL
Health Is Worth SAVING, and Some