1930 - 1939


During the past year, the film "Dynamite - Concentrated Power" was exhibited to approximately 14,000 persons, while the IME film "How Jimmie Won the Game" was shown to 268,000 persons.

The publication of the book "History of Explosions on which the American Table of Distances was Based."

IME began issuing a small newspaper to promote explosives usage, called "Explosives Progress."

Over 1000 newspaper clippings were received by the publicity committee. Most were of IME-generated articles.


The use of fiberboard boxes for shipping dynamite by rail was approved by the Interstate Commerce Commission (ICC) under specification 23-F.

SLP No. 11 "Explosives in Agriculture" was first issued.

"Explosives Progress" ceased publication after a total of eleven issues.


"Safety in the Handling and Use of Explosives" SLP No. 17, was first published.

A series of 50 major articles were provided to the media this year on uses of explosives.


Cardox replaced 795,000 pounds of dynamite, and liquid oxygen explosives (L.O.X.) replaced 4.3 million pounds.

The first discussions about blast vibrations were held.

A discussion on transporting explosives in trailers came to the conclusion that trailers were not acceptable.


Price list reporting and actual selling prices of high explosives, "B" blasting powder and blasting supplies resumed after an analysis of government fair trade policies.


Radio stations were beginning "news talks" which include public service spots. One hundred fourteen stations were taking part in the blasting cap program.

The U.S. Geological Survey (USGS) developed a machine to measure vibrations caused by blasting. The cost of the machine was approximately $25,000.


The California Industrial Commission included in proposed regulations a paragraph about fumes produced per pound of explosives. The Bureau of Mines and IME agreed to draft regulations which could be implemented. This was the beginning of IME Fume Classes I, II and III.

Three thousand, one hundred seventy clippings were received this year on the Institute?s publicity program releases.


IME published a booklet entitled "Dynamite - A Useful Explosive for Mining and Quarrying - Not a Munition of War."

A recommendation was made for a standard IME blasting cap that would be equivalent to the number 7 strength. This was never accepted by the industry.

The Bureau of mines proposed that black blasting powder be prohibited in coal mines but this was not promulgated into regulations.

Three thousand, seven hundred and thirteen clippings were received from the clipping bureau this year, most referring to articles the Institute had written.


Standardization of grade strength markings on high explosives shipped into certain states began.

The film "How Jimmie Won the Game" had been shown to nearly five million children since its release in 1927.


Additional states began to enforce regulations on fume classifications.

The Bureau of Mines began working on vibration measurement standards for blasting.

All references in IME publications to freezing of dynamite were deleted since all companies now made only non-freezing grades.

Five hundred separate publications used material sent out by the Institute.