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Matthias, F. T. (ed.) / The Wisconsin engineer
Volume 33, Number VI (March 1929)

Morrison, L. W.
Engineering review,   pp. 212-III


Page 215


MARCH. 1929                    The WISCONSIN ENGINEER                   
                       215
Action
of Explosives
                    Lesson No. I of
BLASTERS' HANDBOOK
    LL explosives are solids or liquids that can be instantaneously con-
A verted by friction, heat, shock, sparks or other means into large
volumes of gas. That sounds simple, but this fundamental principle
of the action of explosives is modified by a host of circumstances.
First there are "high" and "low" explosives. Then there
are all the
circumstances of purpose, methods of loading and firing and handling
and storing. Explosives are measured principally by these general char-
acteristics: Strength, Velocity, Water Resistance, Density, Fumes,
Temperature of Freezing, and Length and Duration of Flame.
Chapter One of the Blasters' Handbook makes this seemingly compli-
cated subject very easily mastered. Charts and tables explain relative
energy of different strengths. Other characteristics are explained in
classroom terms, and amply illustrated.
Many of the leading technical colleges, universities and schools are
using the Blasters' Handbook in their classroom because of its perfect
practicality. Made up by du Pont field service men out of their own
experience in a great many fields over a great many years. The text-
book of the "school of experience."
             You ought to have this experience text-book.
    A valuable reference and study work. Yours for the mere asking.
                Here's a coupon for your convenience.
REG. U. S. PAT. OFF.
WE-3
E. I. DU PONT DE NEMOURS & CO., Inc., Explosives Department, Wilmington,
Delaware
Without cost or obligation on my part, please send me a copy of the "Blasters'
Handbook."
Name  -..--....--
DormitoryRoomNo -Street                        -----------------------------------------------------------------------------------------.............--
City           --State-----
                        Please mention The Wisconsin Engineer when you write
03
215
The WISCONSIN ENGINEER
MARCH. 1 929


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