The Anaconda standard. [volume] (Anaconda, Mont.) 1889-1970, 1899-10-10
AT THE BIG COMMENTATOR
Improvements and Additions
Now Being Made.
ENLARGlNG ITS CAPACITY
Rolls Being Substituted for STAMPEDE
Jgs Being Overhauled and New
Ones Put In-New Wiflsy
Tables. .

The reduction works of the Anaconda
company at Anaconda consist of four
separate plants, which are known as
the upper works, the refinery, the lower
works and the converter. These begin
at the main Office of the company and
extend down the valley in the order
named. From the upper end of the
upper works to the lower end of the
converter the distance may be roughly
estimated at a mile and a half. AS the
different buildings are about as close
together as they could be advantage
ously placed this will give the reader
some idea of their enormous extent.
The upper works are fully equipped
smelling plant comprising concen-
traitor for crushing and concentrating
the ore, roasters and matte furnaces.
The lower works are Of the same char
acter; the converter takes the matte,
which is about 80 per cent. copper, and
reduces it to pig copper or annode
plates, about SO per cent. fine, While
the refinery as the name signifies, re-
duces the annode plates to condition
of practical purity.
The Standard has from time to time
noted the changes and improvements
that are being made at and about these
various plants. The upper works, the
concentrator and the great matte fur
naces of the lower works have received
some special mention. 1t may now be
stated that the changes at the lower
works concentration are upon scale
even greater than those at the upper.
The lower works are much the larger
and the changes are proportional to the
greater size.
The concentrator is provided with
eight huge crushing stamps, each capa-
BILE Of pounding up from $50 to 400 tons
of ore each "a hours. Arrangements
are now we'll under way for tearing
out No. l stamp-the one at the upper
end-and substituting a Gates crusher
and two pairs of rolls. The crusher
will work up the ore fine enough so
that the rolls can take it. These rolls
will form series, the ore passing
through the first set, then going into
the second for finer crushing, and
aratora
The foundation is now being prepared
for the rolls, and this part of the work
will soon be well advanced. AS soon
as the change is made with No. stamp,
it is expected that a similar change
will be made with No. 8, at the other
end of the series, and it is quite likely
that ultimately all of the stamps will
be replaced with rolls. But if so, it
will ha 6nna q time NOT
to interfere with the regular work Of
the concentrator
The concentration is now provided with
224 Cullom jigS or Separators, and from
70 to so more are to be Immediately
put in. This work is now proceeding,
the wooden frames of many new jigs
being completed and ready to be set
up in place. A large number of the old
ones are also being thoroughly over
hauled and made as good as new.
A new Montgomery mill has recently
been installed for grinding fine tailings
still finer, and appears to be doing coed
work.
There are now 26 trommels in opera
ton, and at least six more will soon be
added. The trommel is revolving,
perforated cylinder, through which the
crushed ore is passed ana screened.
Trommels are worked in sets. the ore
passing successfully from tnTcoarser
to the finer ones.
On the second door below the stampG
there are five SITS of rolls which take
tie material that has not been crushed
finer than a half inch ana regrind it,
after which It is Elevated back to an
upper set of jigs and worked over. A
new set of rollers of this class is soon to
be put in.
This concentration is provided with sc
revolving tables for the saving OF
shines. These tables are being put into
| thorough repair. and will soon be as
good as new. Some idea of the inn
mense size of this building may be
| gathered from the fact that these sc
| tables are each some is feet in diam
| eter.
There are now 81 Wiley tables in
| operation. These appear to be about
16 feet in length and five or six feet in
width. Some Is or IA new ones are to
! be at once added to this portion Of the
| plant.
The revolving tables and the Wilfleye
| do the last mechanical work of the
| cOncentrator saving the shines whici
are too light to be caught directly from
| the jigs. From these tables the shines
| that are saved pass into the immense
tank houses, where they are saved.
| These works are now capable G.
handling 5000 tons of ore daily, an(
it is safe to say that with the enlarge
| ments and changes being made the ca
F! pacity will be increased 10 1000 tons
and perhaps considerably more. Thi
great coneentrator is now under til
| foremanship of Michael Morley.
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