El Paso herald. (El Paso, Tex.) 1901-1931, 1913-05-07

cline to the Joe Bush tunnel and from
this point trammed out to the surface,
where it IS to be utilized in making
a yard The method of mining Of the
Colorado ore body which has been I'M
der Amusement for some time has been
finally decided in favor Of the pillar
and stOpe method Actual operations
have proved its practicability to this
portion of the ore body. The instala-
ton of the electric hoist at the Colo
RADIO shaft was completed on the 2Sth
and is proving highly efficient At the
mill site operations at present are con-
fined to track laying and construction
work on the sand and rock bins. The
warehouse was completed last week.
It has been definitely decided to
erect 500 ton test mill, which is to
be located near the Scorpion shaft.
This mill is for the purpose of further
demonstration of the applicability of
the Minerals Separation Limited's flo
tat1on process to the Inspiration type
Of ore. Work is to commence immedi-
ately. The mill site is now connected
directly by rail with the main line OF
the Arizona Eastern railroad. The road
bed, with the exception of one cut, is
The work OF exeavating for the
foundations of the coarse crushing
plant, which is located near the main
hosting shafts. is about half COM
work should be completed in another
six weeks.
Encounter Large Tonnage.
At the Old Dominion developments
are proving highly gratifying to the
company. A large tonnage Of sulphide
ores has been encountered and as hith-
ertO the company has been obliged to
purchase most Of its sUlphide ores for
the smelters 1t means a marked reduc-
ton in the cost of production Already
the cost per pound is below 10 cents;
for 1872 the cost averaged 1884 cents.
On the 18th level in the west portion of
the mine a crosscut has disclosed 80
feet. Of 10 percent ore and as vet
neither hanging or foot wall are in
sight In the east portion added depth
constantly disclosed a steady increase
IN Inc Nalue and size OF the ore body
Arizona Commercial.
The work of sinking the Copper. Hill
shaft OF the Arizona Commercial is
being carried on vigorously. An addi-
tonal 100 feet should give a depth
equivalent to the 18th level of the old
Dominion and it is highly probable that
sinking VIII be then discontinued and
an active plan of development work
carried on at this depth. It is to be re-
membered that the Old Dominion en-
countered some very high grade ore at
this depth. The shaft is making only
a small amount of water and il is
easily handled by the day shift The
eighth level is as yet in barren ground
and It is expected that it viii entail
considerable more drifting before the
vein encountered on the seventh level
viii be reached
Gibson Copper COmpany to Resume
1t is reported that the Gibson Conner
company has satisfactorily adjusted
the legal proceedings that were insti-
tUted against the company and that
operations are soon to be resumed.
Southwestern Miami.
southwestern Miami hole No. II has
attained a depth of 1908 feet. One hum
dred feet of commercial ore was en-
cOuntered in this hole. Work at No IA
has been temporarily suspended. pend
ing the arrival of a casing spear. A
section of casing was lost in the hole
last week. Hole No. is sos feet deem.
At the South Live Oak drilling on
hole No. is progressing steadily. The
hole is now 175 feet deeD and is pass-
ing through silicified schist. which is
considerable silicate of con-
per This is a very favorable indication !
for ore with depth
VIII Erect n Mill.
Miami Arizona Copper DEVELOPMENT !
company work at present is being con- /
fined to prosecuting. Past work has 4
developed a considerable amount of /
milling ore and it is the intention of !
he company to erect a mill some time
n the future. The holdings of the com
lany consist of IS claims adjoining and /
ylng south and west of the Gibson
copper company. The ore is similar to
he Gibson ore and during the past a I
arge amount of high grade has been
impped- Development to date consists
y about 1900 feet of drifting. of which
bout 500 is on the main vein.