Bisbee daily review., 1910-05-10

BOSTON.-Just at present, Wheh
the popular cry against the copper
industry is "oveIproduction''. it is
interesting to speculate as TO Whai
the resui will be when some OF the
great disseminated low grade ore
bodies now under development beS-n
to add to the annual supply OF the
red metal In the Globe-M-ami dis
trict' alone. no less than four large
mines Miami. Inspiration, Live OAK
and Keystone-are being prepared
for their productive careers. While
in each of these instances not all
the data is at hand for predieating
ore reserves and cost of production,
vet the comparatively conservative
figures made possible BY the results
of development 50 far and estimates
based hereon show that most form
liable increase il the worlds sup
ply of copper will occur unless. OF
course. concerted steps are taken 20
curtan the output. or some OF the
present ElNdA iANNANNAS ANt~Ai
boundaries OF their ore deposits.
In point OF proximity and begin
ming a productive career. the prop
erty Of the Miami Copper Co, stands
first among the low grade mines Of
the Globe Miami district At Miami
concentrating mill is well advanced
in construction and should be ready
for operating by January l. 1911.
This mill has units for 10000 tons
daily capacity, but for the present
only equipment necessary for treat
ing 1000 ton of ore daily will be in
stalled while j. Park Claiming S
estimate of tonnage. made about a
year ago. was $4,000 00o. il is reason
ably certain that, contemporaneous
with blocking out. enough develop
ment has been done during the past
year to put in sight at least boo, GOO
tons more ore, thus making the pres
slt developed tonnage no less than
20 0G0. 900 tons. The average amount
OF copper in this ore is estimated at
. "a per cent. and the recovery viii
be approximately IS per cent The
management est mates the cost Of
production at nine cent a pound
on beginning production it is nos
probable that the Miami Copper CO.
mill will treat over LEGO tons daily
but as soon as the concentration equip
ment has been given its initial trial
and necessary repairs and adjust
ments have been made. at least 1000
tons Of ore viii be handled daily
From this amount OF ore about 81,
600 pounds OF copper should be pro
duced each day. thus assuring the
mines on an annual metal product Of
about 3O.0G0D00 pounds of copper.
Estimating the proved ore body al
20 900 600 million tons. which is con
servatiye. and supposing the rate Of
concentration to be maintained at
600 tons daily, the Miami mine
should have a productive career eN-
tending over a period of nearly 30
years.
The inspiration properly has not
Dcen developed 10 SuCn an extent az
TO furnish such accurate data on ore
reserves. percentage Of recovery
and other features Of ore extraction
/ and treatment Basing an estimate
! on the result OF drifting and churr
| drilling TO date, however. it can be
| conseTvatively said that an ore body
/ of $4,000. 900 tons Is indicated pretty
| accurately by the thorough course o
| prospecting that has beel pursued
The tonnage actually developed anC
! partially blocked out by drifting anc
raising at the Joe Bush shaft can b
safely estimated at 5000. 900 tons. A.
| yet. no limit 10 the ore has been Sc
in prospecting While the averag
| OF copper IL the Inspiration ore ha
not been Officially announced. il cal
! reasonably be placed at , "a per cen
and perhaps higher. The percent
age Of recovery should be no lowe
than that Of the Mani ore. or Is pc
cent As the Inspiration Co. vii