The Ely miner. [volume] (Ely, Minn.) 1895-1986, 1924-12-26

characteristics of which are 1920
volt, phase, 60 cycle, slip ring,
were furnished by the Westing-
house Electric & Mfg. Co.
Structural Steel Headframe.
The structural steel headframe is
rs TT. high and is equipped with IL
fit. diam. headsheaves, three struc-
tural steel idler stands between the
headframe and the engine house.
This structural steel material was
fabricated. and erected by the
American Bridge Company.
Electric Driven Hoist.
The electric driven hoist consists
of a single IL fit. diam. 10 tt.
face, cast steel shell drum grooved
for l ~ diam. rope provided with
parallel motion type brake and air
operated brake engine and direct
connected thru herringbone gears
to 600 H. P, 1900 volt, 8 phase,
so cycle induction motor and is de-
signed to handle a single deck cage
and 6-ton skip in balance. The
skips are suspended to the cages
and are operated at a speed of
1000 fit. per minute. The moist
was manufactured by the Allis-
Chalmers Mfg. Co. and the motor
and control by the Westinghouse
Electric & Mfg. Co.
Large Air Compressor.
The air compressor is 2-stage
machine with multiple stage unload
er having an actual capacity of q
473 Gu. ft. of free air per minute
discharging at 100 lbs. gage press
ure, direct-connected to 100 H. P.
1900 volt, 3 phase, 60 cycle
synchronous motor The air COM
pressor was furnished by the Worth
ington Pump & Machinery Corpora
ton, and the motor and control by
the Westinghouse Electric & Mfg.
Co.
Pumping and Filtration.
The pumping plant at Lake Yer
million consists of two 200 gallon,
500 fit. had, vertical triplex pumps
which pump the water from 10''
diam. intake extending 800 fit. in
to the lake, to the filtration plant
on top of the hill. Each of these
pumps are direct-connected through
herringbone gears to 80 H. P,
1900 volt, phase, 60 cycle induc-
ton motor. The pumps were fur
nished by the Prescott Company
and motors and control by the
Westinghouse Electric & Mfg. Co.
The filtration plant, located on
top of the hill, is $50" $500
ground dimensions, 80 #. high, and
consists of an aerating tank where
the water is received and the iron
content oxidized. From the aerat-
ing tank the water flows by
gravity through sand filters, dis
charging from the sand filters into
the clear well where the chlorination
equipment is installed. The rated
capacity of the gravity filters is 400
q. D. m. All water used in the
mine equipment and at the Soudan
Location will be treated at this
plant The equipment in the filtra-
ton plant consists of pumps which
pump water from clear well to
elevated tanks to supply change
house and engine house equipment;
also a fire pump for supplying high
pressure service in case of fire.
The water to supply the ,Soudan
Location flows by gravity from
clear well and has sufficient head
for all domestic purposes.
Heating System.
There will be an independent
heating plant for heating the filtra-
ton plant and machine and car
penter shops, another heating plant
for heating the engine house and
change house. All boilers cast
iron sectional type of the same size
and capacity. All heating mains
and electric conduits are laid in
concrete trenches underground, also
the high pressure air line from en-
CINE house to shaft.
Electric Haulage-Crusher Plant.
The haulage betwee headframe
and engine house, previously done
by mules, has been replaced by an
endless track on which will be op-
Grated 6-ton remote control
motor-operated larry car. The lar
ry car was assembled by the Ma
tional Iron Works, motor for which
was furnished by the General Elec-
trio Company. This larry car will
load from a skip dump located
above the collar of the shaft and
discharge into pockets at the crush
house. The product of the crush
ers will be hauled in a steel tram
car by 3-ton storage battery
locomotive to the stockpile in the
winter, and to the shipping pocket
i the summer. The storage bat
terry locomotive was furnished by
the General Electric Company. The
three old crushers in the crusher
house will be retained, but are pro-
vided with new individual so H. P,
440 volt, 3 phase, 60 cycle, slip
ring induction motors with silent
chain drive to counter shafts from
which belts drive the crushers.
These motors and control were fur
nished by the General Electric Com
pany
Satisfaction Equipment
Electric power for operating the
equipment is furnished by the Min
nesota Power & Light Co. at $4,000
volts. The sub-station equipment
consists of three 500 KVA trans
formers 44000-2300 volts. This
transformer and switching equip
ment was furnished by the West
inghouse Electric & Mfg. Co.
The Nineteenth Hole.
AT an English inn a group of golf en-
thuSiaStS were discussing over the