The DeLamar nugget. [volume] (DeLamar, Idaho) 1891-1900, 1891-12-07
The Reconstructed DeLamar Mill.

larging the DeLamar mill is 80 nj arly
completed that description of the i'm
provemenss made is now in order.
Shortly after Capt. Plummer became
manager for the company he told the
NUGGET mining man that, pending the
construction of the new and larger mill
which had been provided for by the
company when organized, he would rec
ommend the enlargeme ent of the present
mill, which he thought could be made
an efficient plant, with double its then
capacity, without much increasing the
running expenses. This is the improve
ment which has now been made and,
with the exception of some minor de-
tails is complete:
To property describe what has been
done to make this probably the most
modern and complete amalgamatiug
mill in Idaho, it is first n necessary to give
brief description of the mill when
the work of remodeling was begun. The
mill then had twenty stamps, eighteen
combination iron pans and nine iron
settlers, with slum tanks, quicksilver ell
evators, etc. and was regarded as quite
complete gravity mill. The power was
supplied by two forty-horse power en-
gines and four fue boilers. The en-
gines were attached to the main driving
shaft at the end of the rows of pans and
settlers. The reconstructed mill has an
entire new power, ten additional $50
pound stamps, with double discharge
batteries and with the original batteries
changed to double discharge, so that the
present thirty stamps have double the
capacity Of the original twenty. Six of
the original pans have been removed
and in their place twelve Of the latest
improved combination pans have been
added, making twenty-four now doing
service instead Of eighteen. -Fwo>of the
former settlers have been taken ont and
six larger ones have been pnt in, thus
now giving the enlarged mill twenty
four pans and twelve settlers, with their
full complement of gravity pulp tanks,
amalgam tanks, cleaning pans, etc., all
built on the same lines with the origi-
nails.
In order to make all these improve
ments with the least possible stoppage
of the mill, new engine and boiler
houses were first constructed in front of
the original mill, and the new power
put in complete shape before any of the
old machinery was disturbed. The new
power was placed directly opposite the
center of the long line of shafting and
when all was complete, it required less
than forty-eight hours to put on new
driving pulley and again start the ma
chinery run by the new power. After
this was done, the old engines were re-
moved and the space occupied used for
the extension of the pan floor, and the
shaft extended and the new pans and
settlers added with but a few hours de-
lay, making the entire stoppage of the
MILL while the changes were being
made, less than three days.
The new engine is the most complete
piece of machinery ever brought into
this county. 1t is Corliss, slide valve,
cutoff motion, with 30x4S inch cylin-
der, with fifteen foot f1ywheel, weigh
ing 1900 pounds, ten-foot driving
pulley, weighing 5000 pounds, and a
crank shaft eleven inches on bearings.
1t is connected with the machinery
shaft by thrty-inch belt. 1t is sup
piled with steam from two 54-inch by
l6-feet steel tubular boilers. The four
old boilers, which formerly supplied
steam, have, however, not been re-
moved but are held for reserve. The
engine room, containing only the en-
CINE and electric light dvnamo,is hand
someiy fitted up and everything runs so
smoothly that it can scarcely be heard.
The engine is run at Go revolutions and
the stamps drop 95 times per minute.
been put in arc the latest improved,
with wood sides and false bottoms, un-
der which the steam discharged from
the engine is utilized to heat the pulp,
thus saving live steam which is gener-
ally used. The settlers haye also wood
en- sides and are larger than the old
iron ones. AS the old pans and settlers
still in use are worn out they will be re-
placed by the later improved ones.
1t is, of course too early to determine
what saving will be made upon the run
ming expenses and exact increase in ca
pacity, but it is now estimated that
double the amount of ore can be worked
and probably not more than two addi-