Bisbee daily review., 1912-11-10

The physical condition of our mines
is good. ] look for satisfactory year
ahead and a notable increase In the
output of both copper and silver. The
important developments OF new ore
have all been in the limestone areas.
These ores contain from 3 TO > per
cent copper and from / 10 OF. Of
silver, and from 10 TO soc in gold per
ton. They are direct smelling ores.
highly basic in character AS init
mated In my last report, no attempt
was made 10 press production during
the year, but, on the contrary, cur
tailed production was aimed at. on
account of the development OF basic
high sulphur ores. there was need,
however of more silica, and opera
lions consequently we're resumed at
the Henrietta mine. which was closed
down in 1910. and the Cobre Grande
mine was also reopened. Toward The
end OF the year work was also started
at Puertecitos with view of. increasing
output when necessary.
Al Puertecitos a new quarry for OK
idized ores has been started, and j.
H. Kirk has undertaken the develop
ment of the pOrphyry contacts on eth
er flank OF the limestone core Of this
bill. The results of his work are prom
ising. and he expects by the middle
of the coming year TO obtain over 2o0
tons of smelling ore per day from this
mine Most OF the work. however, IL
dead work preparatory TO extraction.
which accounts for the high costs at
this mine.
The Henrietta mine proper. while
profitable. is a small mine. and no
large ore body has been found in its
workings. II is used, however. as
base for broader work. and two long
cross-cuts are being driven. connect.
ing with each other for air. that will
ultimately attain a length of several
thousand feet. They run south, toward
the main Gordon. and are intended TO
intercept the mineral belt thought to
exist far out in this direction. This
work will tend 10 give information as
20 the future direction of the Combi-
nation adit. which will ultimately
serve as an outlet for this district.
should 1t develop as hoped. The face
of the Combination adit. at the close
Of the year. was 500 feet from the
portal. and is being slowly driven
ahead. The adit mas passed entirely
beyond the Elisa zone and has entered
the Cananes claim.
The Elisa mine has continued TO I'M
prove through development in the
past year. The main ore shoot has
been opened on the sixth level and
has been cross-cut by extraction adits
on the level of the Combination adit,
and the main shaft will be sunk dur
ing the coming year to develop the
ere below. The ore has been OF a sat
isfactory grade and the M inc is look
ing better than il has at any time
during the past several years.
Possibly the most encouraging de-
velopments on the entire property
have been in the limestone area of the
Sierra de Cobre mine, over the Com
bination aGit In my last report 7 re-
ferred to the fact that the Eureka
fault, which appears to be the extern
sion of the Capote fault, had large
misses Of gossan along il and would
probably develop correct. and very
important bodies Of ore This pTedic.
ton has proved correct, and very I'M
portant ore bodies have been deyeL
oped in the limestone adjacent TO this
cut ore in a number of places IN the
limestone that viii undoubtedly yield
important tOnnages in stopping. The
ore in this area is exceedingly irTeg-
uIar in its occurrence. and a great
deal OF prospecting is done in stopping
Developments on the tenth level OF
the Capote mine under the old ore.
body have been Disappointing, al
though some ore has been discovered
N the old body between the eighth
and tenth levels. In tie early history
of this district, in the year 1890. one
of the Capote adits crossed an ex-
cesdingIy lean body OF iron pyrite
on the first level. Owing to the sim
flarity OF its occurrence to the ore
found in the Sierra de Cobre. and
owing 10 the fact thai in the Sierra
de Cobre nearly barren pyrite is often
found, il vas decided to develop this
zone We first discovered ore that Is
undoubtedly connected with IL on the
ninth level During The year the ore
has been opened on TIE second. third,
fourth, and fifth levels. and there can
he no question but that this ore will
continue as far as the ninth level
Great deal of the ore Is an exceeding.
~ lean iron pyrite containing a high
percentage Of sulphur. and canLOt be
handled at the present time. but there
are notable quantities Of the ore on
the lower levels that is OF profitable
smelling grade. The mass OF pyrite
on the fifth level is about z20 H. long.
with a maximum width OF l00 r., and
the indications are that large ton
mage of profitable ore viii be obtained
even il a way Of tresting the leaner
InateriGl cannot be found at present.
This ore CONTAINS q certain amount Of
silver as well as copper. and as long
as IL contains over 3lz per cent cop
per IL should be profitable az the
smeIter. A considerable amount OF il