The Idaho recorder. [volume] (Salmon City, Idaho) 1886-1927, 1921-05-13
M2EGHD LNIEx1yI3D1727T

occurred In any plants where employees had
pledged support to the campaign This record
Is In marked contrast to the five disastrous expio-
sions in the United States and Canada which took
place In the preceding 20 months. between
March. 1916 and October, 1917
Thirty thousand copies of the booklet have been
mailed to all former licensees of the grain cor
poration throughout the country. II will be placed
on record in Washington n public document
and the Department of Agriculture will supply
every library In the United States with copy
for educational purposes.
Since last fall u. J. Price. engineer in charge OF
the dust exploelon investigations. and DIR. H. ii.
Brown of the@hureau of chemistry. Department
of Agriculture. have toured the country making
demonstrations and addressing owners Of mills
and elevators In every large city OF the East,
Middle West. Northwest, West and South the
dangers and methods OF preventing grain dust
explosions. All of these meetings have been held
under the auspices of officials OF the grain cor.
rorntIon and have been well attended. DIR. J. w.
T. Duvel has supervised the work at the New
York office of the corporation.
photograph reproduced herewith shows a de-
monstrator staging a miniature explosion. which
Is however. quite large enough TO he convincing.
Miniature grain elevators like this were car
ried all the country. The demonstration got
the workmen In a factory together. They were
induced to gather a spoonful Of dust-eo that
nobody should say afterwnrd that secret OK.
plosive had been juggled into II. Then the dust
exploded. Almost invariably a new group Of
converts was made. Usually Improvement I'm fac.
tory conditions Was made.
The miniature elevator Is made Of heavy steel
hoited through from side To side. There Il A
sliding door In the front. On the roof Is n square
four-inch ventiator In the back wall Is a small
hole pair Of bellows. n short rubber tube and
a candle complete the demonstrating outfit
suppose the dernonstrator Is staging an exp,o-
sion for the bench, of starch factory. The
xorkmen collect a spoonful Of starch dust from
sill, beam or bench. The operator sturs the dust
IN the mouth ~ the rubber tube. A plank II put
over the yen,ilator and weighed down. The rnn.
die In lighted and set inside the elevator The
steel door Ii closed and fastened. The end NJ
ire rubber tube Is inserted IN the small hole IN
the wall The demonstrator s1ue.xes the bellows
The starch dust and the candle fame do the
rest
Hang goes the starch dust The weight.
on the plank and the plank Itself 20 sailing
through the air-in room they 90 slam IN
against the ceiling Flame leaps from every ere.
vice Of the elevator. The steel box jumps The
noise il irnpressively ioud Every man who see.
the demonstration Is set 10 thinking
There - constant danger Of dus, EXPLOSION
In every factory where the air il dus; laden and
machinery constantly generates electricity. VS.,
ter-drenches and devices 10 keep the dust ON, q,
the air lessen the danger Of explosion. Probably
= stiIl effective preventive is a device which
allows every pierre Of machinery IN ground tho
electrical current II may renerata In short hitch
a special sort Of lightning rod 10 your machine
that generates electricity and preyen, the x,art
that fires the dust and destroys the establishrn.n,
So frequent have been the explosions In tbre~h
ing machines that the cry OF bombs has been
raised They really dust explosions Dus,
explosions on grain-fhreshsrS. and the experI-
ments conducted By fhs United State. Depart
ment OF Agriculture si,ha view TO their prevea-