The Black Hills union and western stock review. [volume] (Rapid City, S.D.) 1904-19??, 1911-03-03

same as the Serpentlne rock, the Only
difference being that one is fibrous
and the other crystalline. The asbes-
tos fibres lie parallel and closely
bedded, extending from one side OF
the seam to the other, either at right
angles or nearly so. When bruised
by crushing they become mass OF
delicate threads, silk-like in apear-
ance and easily separated from the
crusted rock by blast of air from
q fan.
Asbestos Has Qualities No Other Sub
stance Possesses.
To date there has been no substi-
tute found for asbestos. No other
mineral possesses it's great heat-re-
sisting qualities. and therein lies Its
wonderful value in the commercial
world.
proof buildings it is as necessary as
building stone or structural steel. 1t
is also used extensively in building
of sbattleships and other classes OF
sea-going craft.
Because of its sound. as we'll as
fire proof virtues, it now enters into
the construction of modern railway
passenger cars. Of course, every
one knows that the fire-proof thea
ire curtains are manufactured from
this important mineral, and the lat
est thing in asbestos fabric is it's
adoption to the making of women's
gowns. They say that it is particu-
larly adapted to the use of ballot
dancers and theatrical costumes, be-
cause it combines fire-resisting prop
critics with lightness of weight. soft,
silky fluffiness and great durability.
In the installation of hot air and
steam-heating apparatus, the inner
lining and outer covering for conduits
boiler insulation, the manufacture of
electrical appliances, and in thous-
and other ways asbestos plays an i'm
portant part.
1t is used for fireproof brick,
building paper, window and door
frames, thing, floor and furnace ce-
ment, fireproof gloves and mittens,
rope, cord and twine. If it were not
for asbestos we would have no fire.
proof shingles, lath, paint, lamp
shades, brazing blocks, filtering films
and hundreds of other everyday ne
cessities, which we use with never a
thought that they are anything out
of the ordinary. Tons of it are used
every year in the manufacture Of
sad irons that hold their heat more
than twice az long as the ordinary
irons and whose handles are always
cool to the touch.
Very nearly every day some new
use is found for asbestos. Some new
application is made that makes us
wonder how we ever got along be-
fore without it. In this way the de-
mand is kept increasing instead of
diminishing. and until the develop.
ment of the Wyoming fields there
was not much prospect of supple
menting the Canadian supply as far
as the North American continent was
concerned.
A Splendid Record in Very Shor,
Time.
In just a little over year after
the Wyoming companies were organ
| lied, mills had been erected, q grind
ing plant had been secured in Den.
yer, and Wyoming asbestos was go.
ing forth to meet the demand OF
commercial trade.
| Perhaps word as to the methods
employed in the milling of asbestos
would be interesting to those who
have never had the opportunity tt
observe it. 1t is, indeed, very sim
lple and inexpensive, requiring nc
smelling and no very costly machin
cry. The rock, Just as it is take!
from the mines. and there need b.
but little sorting. is delivered to a,
ordinary jaw crusher. such as is USE
! in crushing ores in smelters and re
duction plants. Here it is PARTIAL
broken up and then carried to JET
! feray crusher, which in turn deliver
it to set of rolls. BY this tim
10th the rock and the fibre are pref
ty we'll broken up and easily separ
ated. In this condition it is put thr
a special machine. known as jun
BIO fiberizer, invented by c. H. Par
( ker Of the Thetford mines, Canada
: This fiberizer is made with a hollo>
: cylinder about eight feet long an
: three feet In diameter. The insid
lis equipped with long steel arms Sc
5 at an angle, and as the rock passe
: through the machine these ste,
: arms. working on eccentrics. bes
: and break up the fibre into q sof
4 silky mass, separating it from tn
rnob QUA orfovo a tfoo1Iv da1txor,u0