The diamond drill. (Crystal Falls, Iron County, Mich.) 1887-1996, 1917-09-22

/ through the city mains which were extended 10
the odgers plant while the work OF installation
was in progress
Model Electric Power Plant.
! While Captain Richards was busy getting the
| machinery and foundations ready the Peninsula
| Power company at work erecting towers
and stringng the lines to transport electric pow
er manufactured at Twin Falls to the property
| The power company ready as soon as the
machinery was installed to turn on the Juice
and to do they installed three 2O0-watt trans
formers in the basement OF the new engine
house where the current of 5000 volts is stepped
down TO 1900 volts for use in the motors that
operate the different machines
The switchboard through which this reduced
current is distributed is large and very com
plicated, necessitating the attention of an cleo
trician. This necessity is supplied by head
electrician who attends to the work at all of
the mines of the company in this district.
The pumps operated at the present time
by air which In turn is compressed by the use of
electric current to operate the big compressing
machine II is the intention, just as soon as the
third level Is opened up. TO install rotary cleo
tric pump which will handle all of the water
from the mine The pumping plant consists
now Of two No. 10 Cameron pumps. located on
the second bottom level
For auxiliary power the pumps are all pped
ready for steam so that should anything happen
to disable the electric power plant IL would take
but a few minutes to substitute steam Steam
is also used heat all of the buildings and fur
nish hot water for the changing house.
In the Engine House.
The contract for the hoistng engine given
to the Nordburg Co. of Milwaukee, and, we are
told at the mine that the machinery. has given
the best Of satisfaction and that the Nordbugr
Co. who gave this job particular attention, have
demonstrated their ability to put out electrically
driven machinery that is fully in keeping with
their excellent make OF steam machinery 50 long
used about here
TO begin with, the basement Of the engine
house Is filed with masses OF concrete which
the different items OF machinery set. The
basement is also connected with the shaft through
the tunnel which we win tell Of later
As one enters the engine house the most notice
able piece of machinery is the big hoist which op
crates a drum 9 foot in diameter by feet IN
length This drum operates two skips hung in
balance so that as one comes to the surface with
its load the other descends to be filled. taking
from the hoist all OF the load excepting the
This drum is large enough TO accommodate g.
900 feet OF cable and winds II onto the drum at
the rate OF 1000 II. per minute, so that the time
consumed in raising the load OF ore from the
landing place al the bottom OF the shaft to the
landing in the shaft house Is but very small
The motor which drives this hoist Is OF $50 p.
and Of the General Electric Co. make as are the
other motors in use. The power is transmitted
through herring bone gear that Is proving very
satisfactory. eliminating much Of the noise that
IS present In straight geared machinery.
Next to the big hoist is the cage hoist the drum
OF which Is OF the dimensions that which
hoist. the skip, but II is turned at speed rate OF
only 600 feet per minute This hoist Is used 70
handle the men going mp and down the shaft and
Is driven by 122 h. p. motor OF 220O volts
These hoists equipped with electrical ap-
paratus which works automatically and when
once sets switches off the current SO that the
hoisting Of a skip too high In the shaft Is guarded
and likewise the cage
In addition to the two shaft hoists there is
small Lidgerwood hoist which is used to handle
the ore from the pocket to the crusher. The drum
lpeed Of this hoist is 200 feet per minute and Il
IS driven by a 85 h. D. motor OF 44O volts
The other item Of machinery shown in the pic
turo Of Tho engine house is the big Tngersoll-Rand
I ANttl tahoI ~ ~ % lNt iNok'lN NhlNf Afpf anu
( has a capacity OF 2lS0 feet Of compressed air per
minute at 225 revolutions II Is driven by 400
H. p motor Of ? 200 volts and Il equipped with an
unloading device which allows the compressor 70
regulate itself to the load which II carries This
device works automatically at "a, y, q and full
loads thus keeping the air practically at a con
stant level
| Tunnel n New Departure.
4
change house where the men wash and change
their clothes. II Is a long step from the old. III
smelling. dirty wooden buildings OF twenty years
ago to the spick and span, well kept changing
house OF to-day.
special feature at the odgers property and
one that might be copied to advantage by other
mining companies is tunnel which connecta the