The semi-weekly miner. [volume] (Butte, Mont.) 1882-1886, 1884-07-26
The Anderson Concentrating and
Amal9amatipg Machine.

1t was known in mining and milling circles
some time ago that Mr.. D. H. Anderson. OF this
place, had invented . new machine for concen-
t-ating ore. Most men who heard of it o~fcourse
shook their heads and doub'ed if it would
amount to anything .ince there had been so
many att mp,s at this thing, and almost as
many failures. Mr.. Anderson, however, went
IN with his work. After spending several
months in making his calculations and draw
ing his drafts. he showed bis plans to some par
ties, told them what he proposed the machine
should dc and how it should work and offered
them partnership in the work, providing they
would help hi'n through. These gentlemen
thought they saw a good concentrator in pros
pect and took stock. They sent Mr.. Anderson
to Chicago and furnished him with means to
have the machinery made, set up and tried.
The first trial Of the first machine was made in
Chicago on some copper ore from New Mexico.
1t worked like a charm. In concentrating 1t
separated copper from zinc Some men were
present who deal in mining machinery and
these seeing how nicely 1T worked. offered Mr..
Anderson a liberal price for the patent right.
But Mr.. Anderson and his partners did not want
to sell then. Machinery for a double concen-
traitor was sent to Butte and set up at the old
Longmaid concentration. On Wednesday after
noon the steam was turned on and the new
%concentrator started up. Mr.. Anderson and his
partners were all surprised st the spoothness
with which the machinery run. 1t was set to
work on some tailings from the Longmaid ron
centrator and saved apparently as much
as the old ~concentrator had saved at
first. The percentage could not at
the time this report was made not be
told as no assay had been made. Thu
concentrator consists Of a series Of three
pans set one above the other, kept in constant
agitation by means of e"centrics which give the
pans what is called the gold pan motion"
The ore having been crushed, the finer the bet.
ter. is carried into the upper pan by q stream OF
water. Here what concentrates empties
through a valve into q a n which is to receive
the concen rated ore. TIL lighter particles are
carried on and emptied into the second pan.
Here also the heavier particles Of the ore empty
a valve into the tank Of concentrated
ore, and the lighter particles are emptied into
the third pan, where the same process is repeat
ed. BY this time it is estimated that there will
not be much mineral left in the pans. so the re
1CCtc0 COnLoutS VI LuC tAtAu pau LIZ 81 O"CN "
run out as tai!ings. For concentrating ore in
gold and silver are found quicksilver Is
placed in the bottom Of the first pan and the
valve closed so that the copper. n lighter
minerals pass on to the second and 'hfrd pans.
the owners OF the patent right Of this concen-
traitor undoubtedly have a fortune in their pos
The concentration is at work now MI.
Ander.on has not yet gotten 1t to working to his
liking, hut by next Monday will have it In first
class trim, when he and the rest OF the company
will be on hand ready to receive visitors. show
them the concentration and politely answer all
on the subject. The machine is
known as the "Anderson Concentrating and
matchmaking Machine" The company con'
of D. H Anderson, H Brownson Smith, H.
G Young, Barney Roudebush, Wallace & Cieve'
land and N. D. Annas