Custer weekly chronicle. [volume] (Custer City, S.D.) 1890-1931, 1908-08-29

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the sound of hammer or saw, it pro-
ceeded from the boarding house and was
the welcome call to dinner. 1t was
good, and having devoured it with a
relish we again returned to our examin-
alton of the mill which had been erect
ed since our last visit and was now com.
plete except the finishing touches.
We commenced at the top where we
found an ore chute through which the
ore was delivered first to the grizzlies
and then to the rock crusher, then to
the Challenge feeders and then to the
stamps. From the stamps to the copper
plates and to the Pierce quicksilver
traps and to the hydraulic classifers
and then to two Wiley concentrators
and to the sinners. We were following
the course of the ore but this method OF
separating the shines from the pulp was
new to us and we followed it with an
added interest. The shines from the
overflow from the concentrators and
from the slime tables pass to settling
tanks and the solutions are pumped
back to the solution tanks and from
there to the zinc boxes where the gold
is precipitated from the solutions on
zinc shavings. The solutions are then
pumped back to the standardizing tanks
where they receive more cyanide and
are again ready for use, that is when
they are brought to strength Of fifteen
hundreths of one per cent. The slime
tailings are then pumped to agitating
tanks where they are kept for eight
hours where the agitation is kept up by
two centrifugal pumps, the solutions be-
ing drawn through hole in the bottom
of the tanks and pumped up and passed
through again and again until thorough
ly leached. The concentrates will
be shipped to the smelter.
The tailings from the stamps and con-
centrators are treated in tanks separate
from the shines, and on account of their
greater bulk require great many more
tanks, and the solutions are precipitated
in different set of zinc boxes from the
slime solutions, and the whole treat
ment is a double one from first to
last.
The plan or method of treatment was
drawn by Henry A. Woods and Stevens
of Denver, and is very complete, and
guaranteed to save the gold contents oi
the ore. 1t is not expensive as it is as
nearly automatic as can be, and the
company have ample power with their
100 horse power boiler and 80 horse
power engine to perform the work with
ease.
We now find that lack of space in this
issue of our paper will compel us to
summarize and condense this report
which we do as follows: There are ten
stamps, each weighing $50 pounds one
rock crusher, Blake pattern, heavy; two
copper plates, 4xl4 feet; two Wiley
concentrating tables; one Whitley slime
table; twenty-five wooden tanks, mostly
l4x6 feet; thirty-six zinc boxes
the new hoist on the main shaft is 80
horse power, and the gallows frame 40
feet in height with new cage; a zoo
gallon skip to take the water from the
main shaft and new so ton skip to de-
liver the ore from the incline
into the top of the mill; a new
blacksmith shop, 1925 feet; the new
hoist building is 42x48 feet; capacity Of
hoist 400 feet per minute with wire
cable 7-S inches in diameter; Norwalk
air compressor and St. Clair drills
electric dynamo for 80 lights; electric
lights in all the company buildings,
which are seventeen in number, consist.
ing of mill, two hoist buildings, Office,
boarding house, large barn, bunk house,
and miners dwellings lumber used in
building in the last eighteen months,
240, 600 feet, sawed from timber on the
claims and by the company's saw mill an
excellent laboratory, we'll equipped and
supplied, where Mr.. Anderson makes
his tests from time to time.
The depth of the main shaft is 3S;
feet drifts running from main shaft
aggregates 500 feet; the incline tunne
is in 24O feet deep; upraise from incline
tunnel to surface 78 feet; the vein in the
incline will average three feet wide
average value of ore in incline tunne
$1,000 per ton.
The strike Of the formation is norti
IS deg west. The formation veins arr
quite large but low grade. The fssur
veins cut the formation at right angles
The indications show that there ar
about twenty of these high grade fssur
veins in the group. Seven of these hav
been opened by shallow shafts, opel
cuts and trenches and disclose goo
veins of ore. The largest Of these eros