Arizona republican., 1915-05-23


down from surface operations, and
the bottom of each stope is kept so
near the back that, outside of the
drifts, manways and ore chutes or
mills, there is very little need for
timbering. This contributes materl-
ally to the economy of the operations
and is only one of the numerous evil
dences of close, careful management
Outside of the srrcace and fire
zones, as above described. all of the
work in the mine is. done by ccn-
tract based on toe usual foOtage
terms, for development, and for ore
on the quantity taken out in the
Slopes, the price being made suffi-
GENTLY high to cover all necessary
timbering, as well as filling and
tramming. For most purposes, in
blasting, 80 per cent , H CHercules)
powder is used. The lamps carried
are mainly Justrite carbide Drills
used include water Leyners. Jack
hamers and Sullivans. The air plant
at the surface comprises a 2-stage
lngersoll- Rand compressor, % and 81
and 26 and 44A X4S-in, and three
smaller units. including two Inger-
sol-Rand machines driven by 6O0-hp
and 300hp. General Electric motors.
and a Trent compressor belted to n
275-hp. Western Electric motor AS
an aid in keeping drills in condition
the company is using a Leyner
sharpener.
The three adits above mentioned
provide mine drainage down to and
including the 1O0-ft. level: but be-
low that it needs to be forced up.
and on the 1500-ft. level a concrete
station has been constructed which is
equipped with an Aldrich quintiplex
pump, driven by a 75-hp. Westing-
house motor, which has a capacity
considerably in excess of the flow
All mine water passes over iron
scrap and the copper values in it.
running from about to l Il tons per
day. are precipitated.
The main hosting shaft, No. 3. is
served by a Weliman- Seaver- Morgan
first motion hoist, consisting of a
pair of 20X4S-in. Corliss engines with
double reels. havin ga capacity for
1900 feet, of $500 lbs. on either reel.
including 5x12 in. flat rope. 1t has
SIT clutches and 1912 1T. post
brakes. The rope passes over SIT.
sheaves. For the man and timber
hoist, of the same make there are
two 16X30-in., first motion. slide
valve engines and a single reel
At present all ore is being raised
on the surface in cars on 2-deck
cages; but with the completion of
the tunnel and underground bins, it
will be chuted or raised to the 9OO-ft.
level. and dumped to the loading bins
or pockets which extend between the
9th and 10th levels. For the time
being the hosting plant will be left
at the surface and displaced later by
underground electric units convent
emily located. 'Skips are also expect
ed to replace cars and cages in hoist
ing.
At the soft. level. where the
miners enter, there is a modern
change house with 500 Continental
chain hooks for the mems clothes.
and Hart & Hutchinson lockers for
the superintendent and shift bosses.
No. 3 shaft is now down 1900 feet.
a new shaft will be raised from the
1000 to the 9OU-level for the han
ding of the lower level ores. This
will be a compartment shaft and
hosting will be done in 6-ton skips.
The tunnel at 1000 feet, which is
now practically completed, opens on
the mountain side directly opposite
the new smelter built at Clarkdale.
Ii is approximately 5000 feet long,
u feet bottom width and feet high,
with drainage way underneath. ore
from the bin sections or chutes at
the side, which have Il total capacity
of $4,000 tons, are taken out into
q
cars, and hauled on standard guage
tracks TO loading bins and a sorting
belt at the tunnel mouth by means
of the Jeffrey electric locomotives
mentioned There the loads are
transferred to 5O-ton pressed steel
cars, of which there are 80 now in
service, and hauled by American Lo-
connective Co.'S steam locomotives, on
standard guage 75-lb. tracks, to stor-
age at the smelter, where the loads
are weighed in the cars on 15O-ton
Buffalo scale. suspension bearing.
In this connection it should be
stated that. besides providing ores
which make a mixture largely self
fluxing. nature has placed an almost
ideal deposit of calcite where it can
be worked from the 9OO-ft. level, di-
rectly along the route of the haul
age tunnel. Consequently. it has only
to be broken out and sent down
through storage bin chutes, like the
ore, to tunnel cars on the 10O-ft.
level and transferred to railroad
cars at the tunnel entrance. The
line taken by the tunnel was deter
mined in part by this cir :Lmstance.
For hauling the ore ana flax frcm
the uoina TO the reduction works a
railroad has been built, and organ
lied by q separate corporation
known as the Verde Tunnel & Smelt-
er Railroad Co. This connects at
Clarkdale with another standard
guage road, 80 miles long, built to
a junction with the Santa Fe sys-
tenn at Glade, Ariz., displacing the old
narrow gauge road from Jerome.
Ore and flux from the mine are
brought to the Clarkdale smelter over
an approach consisting of trestles,
the wooden section of which are sup
ported by monolithic piers, and the