Containing the Threat from Illegal Bombings An Integrated National Strategy for Marking, Tagging, Rendering Inert, and Licensing Explosives and Their Precursors (1998) / Chapter Skim
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Appendix M
Appendix M
Pages 359-362
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From page 359... ...
Detonators contain an explosive train that is a miniature version of the larger explosive system. They typically consist of an ignition element (e.g., a "match head" or "primer spot")
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From page 360... ...
The shock-tube system, invented in Sweden, appeared in the United States in the mid-1970s and quickly spread to all types of blasting. It has virtually taken over civil tunneling and is dominant in most underground mining except coal mining.
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From page 361... ...
Some specialized detonators with electronic delays or with toroid electric systems are imported; however, these had a very small market share in the United States as of mid-1997. Bombers may tend to prefer conventional electric detonators or, if nonelectric, fuse detonators, since all other detonators require something special to initiate them.
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From page 362... ...
362 CONTAINING THE THREAT FROM ILLEGAL BOMBINGS MAIN CHARGE The main charge is the primary source of explosive energy. It can be purchased legally or fraudulently; stolen from commercial sources; obtained illegally from military sources; or improvised by mixing together widely available chemicals, such as AN and fuel oily ~ See Chapter 1 for additional information on sources and use.
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