The Anaconda standard. [volume] (Anaconda, Mont.) 1889-1970, 1899-10-24
At THE WORKS
How Matters Are Going on at the
Upper Concentrator.
GATES CRUsHER SET UP
One Pair OF Rolls In Place-New Jigs
Almost Ready-Additional Engine
Power Is Provided-Ths
Boiler Plant.

The Standard has heretofore men
toned somewhat in detail the changes
and improvements being made at the
upper concentration, as well as those in
contemplation, SO far as they can be
definitely learned. In general way it
may be briefly re-stated that the main
features of the changes are the substi-
tuition of crushers and rolls for the
great steam stamps now used for
pounding up the ores the installing of
some new grinding mills, and large
addition to the jig capacity.
This work is PROCEEDING with what
to an outsider, appears to be a very
fair degree of rapidity although some
delay is being experienced in the de-
livery of portions of the expected ma
chinery.
This, of course, holds back the en-
tire work. because of the inter-depend-
ence of the different parts. The crush
err cannot run without the rolls, or vice
versa, and neither can run unless the
trommels and jigs and elevators are
ready TO- handle the material that Is
crushed. Still, appearances indicate
that the first section in which the
changes are to be made will be ready
for business in the course of a couple
of weeks, at the outside
The Gates crusher is in place This
is massive piece of machinery, in
shape not. unlike an hour-glass or,
perhaps. more like hand NOR
tar. 1t stands about seven feet
high and four feet in diameter
at the largest parts. The upper
portion is shaped like a great
bowl inside, with an onening below.
This opening is nearly filled by a cone
yry1,i lob IN,
a sufficient smallness to allow it to pass
| between the cone and the sides of the
crusher.
Thence 1t goes to the rolls. There are
| two sets of these. a coarse and fine.
| Both sets of rolls are also in place, and
| so are the two belt elevators designed
| to carry the crushed material back to
| the upper trommels or screens.
\ These trommels, as it has been ex-
planned heretofore, are revolving cyl
| inders, lying nearly horizontal. and,
| perforated so as to act as sizing ma
| chimes. or screens. The tanks to con-
| tain these trommels have also been
! constructed but the trommels them
selves are yet to be set up
| The trommels are arranged in sets of
three. one within another. the smallest
being the inner one, and having the
largest perforations. while the largest
is the outer one. and is the finest
screen. Inc 1ePu is W1I1lI. pass nE
through the coarsest screen first, then
to the next coarsest and lastly to the
finest
From the trommels it goes to the iigs,
-Four sets OF new jigs have been placed
upon the same floor with the crusher.
Just below are the Hart jigs which are
soon to be supplanted by Culom jigs Of
larger capacity. These are now idle
because the feed Is cut off by the tear
ing out of the stamp that formerly sup
piled this section of the mill.
Still further down a re the nine sets of
new jigs, each set consisting of two
jigs and each Jig of two steps. These
are practically done. At the east end
of the mill, upon the same floor are
nine more sets of new jigs, all in an
advanced state toward completion
Above these last mentioned jigs are the
massive frames for two Chill mills or
other similar grinders now soon to be
set up.
whether a complete change will be
made from stamps to crushers and rolls
will probably depend in large meas
ure upon results, which will be closely
watched 1t is supposed that these
changes will add greatly to the capacity
of the works. More material will be
| handled, more machinery will have TO
be moved and more power will be re-
| uured Hence another engine has been
| installed just north of the old one.
| fine commodious apartment having
| been fitted UP for it. The engine just
set up is Rand" formerly used as an
air compressor, and said to be capable
| of developing about 200 horsepower.
| The old engine is a compound Poppett
| valve, one cylinder being % inches by
| go and the other 20 by 60.
These works are already equipped
with a magnificent boiler plant, there
| being five sets of double and three sin
| giles, making 10 in ALL or these eight
are of go horsepower each, two Of So
and the three singles are immense
Morris boilers of $50 horse power each
The three singles are all connected by
fue with the towering stack which
stands Just to the east of the boiler
house. This stack is six feet in dame
ter and 1893 feet high above the brick
foundation, which gives it total
height from the ground of about 800
| feet. 1t is not likely that any immedi-
ate addition to the boiler power will be
required.