Bisbee daily review. [volume] (Bisbee, Ariz.) 1901-1971, 1908-08-21

Following Is the latest report Of J.
Parke Charming, consulting engineer,
"a the board Of directors OF the Miami
Copper company:
Location.
'.The property of the Miami Copper
company comprises about 800 acres,
all Of which has been pro-
ven to be mineral in character, and is
located six miles west OF the city OF
Globe, Arizona, at which city are the
mines and works of the weii-known
Old Dominion Mining and Smelling
company.
In addition TO this mineral land, the
company also controls tracts of land
on which water has been developed to
insure it a sufficient supply for dognes-
tic purposes and reduction works.
Geology.
'sThe geological conditions of this
ground show chat the ore occurs in an
area OF highly silicified Pinal schist at
or near where il has been cut by the
Schultz granite.
This area of schist has been most
profoundly saeared and scanned and in
this rock the mineral occurs as vein
lets and particles of chalcocite or COP
per SuilfillGS. ODllit BNIAtH Is dlSO ' tSA-
bic on the 470 foot level.
Undoubtedly this ore body is of the
well known type in which the very
low grade primary ore has been en-
riched for certain vertical distance
so as to become commercially valua-
BILE.
Development.
The principal development on the
property has been at the Red Rock
shaft. At this point the shaft mas
been sunk to a depth of 720 feet. Ore
was struck at a depth of 220 feet and
three levels have been opened up, at
270 feet, $40 feet and 40 feet respect
lively. The station is now being cut at
the 5T0-foot level and development
will be pushed at that depth. Station
sets are in at 670-foot level, but no
work has been done at that level.
''On the 270-fOot level ore has been
opened IN for a distance of 300 feet
east and west and 200 feet north and
south In all directions the oNidized
Gaping was reached, so that the to
tai ore developed on this level is
~ 900 square feet Ii is quite post
lie that some of this Gaping may be
only local and that if the Grifts were
extended further, ore void be founa.
On the 3T0-foG- ieyel tie ore Ass
| been opened up for a distance of $50
| feet, east and west, and the east drift
| is still in ore. The west drift has en-
cOuntered an oxidized material. In a
north and south direction the ore has
been opened up to a width of APO feet
at the shaft AMI Gaping has been
struck at both ends, but a crosscut, 20u
| feet east of this shows a width of 2Su
feet and aas developed Gaping at the
north end, but the south end is still
in good ore. The indications are that
the ore will extend COR a considerable
| distance to the south and east. Con
Meeting the faces of the various open
! ings by straight lines the total area
of ore exposed on this level is 144,00C
| square feet
"On the 470-fOot level the ore has
/ been opened up to a length of 700 fee
! east and west Gaping was encoun
! tered in the west end, but the cas-
| end is still continuous in merchandise
ore. In the immediate neighborhoOt
of the shaft on this level some of tht
ore was oxidized into carbonate, 81
that for the present a crosscut 81 tht
shaft is not driven. At a point 20i
| feet east of the shaft, the ore is shown
/ for an extreme width of 1850 feet II
a north and south direction at neithe
end of this crosscut has the cappint
/ been encountered, so that it is impos
sible to predict the width at this point