Pullman herald. [volume] (Pullman, W.T. [Wash.]) 1888-1989, 1900-12-01
MINING NOTES,

MINING NOTES.
Although no new concentrators have
been built in the Occur d'Alenes this
year the milling capacity of the camp
has been materially increased. With
the possible exception of the Bunker
Hill and Sullivan, which has been ope-
rating its new plant, built last year
after the destruction of it's old one,
there is not concentration in the Occur
d'Alenes that has not greater capacity
than it had year ago.
The Mammoth mill was completed
just at the beginning of the year, and
before it ended an addition was put on
to make room for more vanners and
Wiley tables. At the same time a
Huntington mill was added, and the
capacity of the mill was thus increased
so to rs tons per day, while the amount
OF concentrates saved showed even a
greater increase than the amount of
crude ore handled. The milling of the
tailings was more perfect, and because
of its greater slime capacity it is posi-
bic to crowd the jigs harder without
waste
Before the completion of this mill
the Mammoth had been using the old
Gem mill, working it under a lease.
AS soon as it was abandoned by the
Mammoth the work of remodeling it
for the Hecla began, and it has been
busy on Hecla ore ever since it's compile
ton BY the changes made at that time
the mill was enabled to handle consid-
erably more ore.
At the Standard the changes have
mainly been in the addition of more
slime machinery, which saves the ore
closer than before, and at the same
time permits more crowding above.
The latest work there has been the
building of more settling tanks, which
are not yet quite completed.
At the Tiger-P and the Frisco
Consolidated the changes have been
slight.
The Morning has added a lot Of new
slime machinery, increasing the capac-
ity considerably.
The Empire State-Idaho company
has added little slime capacity to the
Last Chance mill, but the additions
there have not been what they would
had not the company been preparing
to build a new concentrator at another
point. which work is well under way.
The Little Silver King mill, the baby
concentration of the camp, is in about
the same position as e year ago, except
that then it had just been started up,
and by changes at different times its
capacity has been increased without
any material additions of machinery.
The 10 concentrators running have
a combined capacity of about 1850 tons
each "a hours, and except for few cold
days during the winter, when the water
freezes in the fumes, and an occasion
al shutdown on account of breakage or
alterations, they are run to their full
capacity. Twenty-Five days out of the
year is undoubtedly an ample allow
ance for Idle time, so that at their pres
ent capacity they would handle 1861
900 tons of crude ore, and allowing for
tn. lesser capacity Of the earlier
months would indicate that not far
from 100000 tons of ore would go
through the concentrators during the
last year of the century.
The amount of concentration which
this ore will have produced is a secret
of the Occur d'Alene mine owners, but
fair estimate would be ton for each
eight tons of crude ore, or an aggre-
gate output for the year of 1877 500 tons
of concentrates, valued at about $I2.-
900 900, after allowing for the loss in
smelling, of which one-third went to
the railroads for freight and the smelt-
ers for treatment, leaving the other
IS. 900 900 TO pay the 3 900 men who
have been employed in taking out and
working the ore, supplying new ma.