The Coeur d'Alene press. (Coeur d'Alene, Idaho) 1892-1907, 1897-06-05
THE 1Rsr A success.
Canopy Shelter Reduces ore al a Public
Exhibition.

Canopy Shelter Reduces Ore al a Public
Kxhihition.
The canopy smelter. on the perfect
ing OF which II. A, Vaughn has been
working for seven years, and which, it,
o vners and many mining men believe,
viii reyOlntionize mining, successfully
stood a public test In North Seattle.
The test was witnessed BY about 100
men interested in mining, as Investors,
engineers, assayers and prnspectors, and
proved that the experimental plant,
with a capacity of eve tons in twenty.
four hours, is success in practice.
The object ut which MIR, Vaughn has
been aiming is to build a smelser so
small aud simple that 1t can be packed
on the backs of horses for long distances
into the mountains and erected at the
mines. lie wanted such a smelter to
treat low grade sulphide ores at the
mines without using any fuel except to
start the TIRE. relying upon the sulphur
which they contain to keep the fire &C.
ing and sustain the heat. The fint
requisite for simplicity and portability
was to do away with the wNter jacket,
which has hitherto been necessary to
prevent the lining OF furnaces from be-
ing burned out. This is u rather cum.
bersome and Intricate part OF the older
furnaces, and has hitherto been a ser.
ious obstacle to transportation of
shelters for long distances over the
trails. For nonsulphlde ores he had to
lind cheap and easily portable fuel.
To prevent the burning out of the
furnace, Mr., Vaughn adopted a mineral
found in the Cascade mountains, which
can BE- either mixed into plaster or
nodded into bricks and with which he
lines his furnace. The peculiarly of
this material is that Instead of expand
ing with heat, it contracts, and will
neither crack nor break, growing harder
as the heat increases
The advantages claimed for this fur
mace were TINS stated to the Post Intel
ligencer representative by Mr.. Byers:
TO erect plant Of ten tons in
twenty-four hours at his mine, a miner
would have to pack in about 200 fire
brick for the lining; a furnace bottom
composed Of two piecfs of iron weigh
ing about sixty pounds each; "a very
light blast pipe in sections. and tuyeres
Of the same material; the patent ma
terial for lining which would be either
in four cans about the size of five.
gallon oil can, if it were to be used as
plaster, or in the shape OF 200 bricks;
a blower; a three horse power electric
motor and water wheel III the ore
does not contain enough sulphur, he
woul require gasoline in ye-gallon
cans. The quantity used will depend on
tie character of ore, but the cost would
be small, for we shall only use eight
gallons in six hours this afternoon.
The miner will build his furnace of the
rock found on the ground, line it with
fire brick and with the patent brick or
plaster. connect his blast pipe and gaso-
line pipe. connect the motor and water
wheel and set the machinery going. As
fuel to start the fire he can use either
charcoal or wood. All the material
that will be required from outside will
weigh from | 500 to 1900 pounds, and
can be packed on ten horses or hauled
i'll a single wagon load 4 ten ton
plant will cost 81, 600 in Seattle, exelns
i've of the power plant, and the com
pany will set it mp and guarantee it to
run. Mr.. Vaughn estimates the cost of
reducing ton Of sulphide ore at 80,
and it would be prOpOrtiouately less for
a larger plant. This plant will save the
cost of packing or hanling ore out of
the mountains to the railroad, the
freight and smelling charges and the
building Of costly wagon roads. The
furnace produces matte ready for the
refinery