One of the problems of defense in the event of atomic warfare is the accurate pinpointing of ground zero of an atomic explosion. Since atomic explosions cause destruction on such a vast scale in contrast to convention¬al explosives, it will not be readily apparent where a bomb has been dropped. The types of destruction surrounding zero point will vary with distance, and the type of rescue operations needed trill depend upon the nature of the de¬struction. Thus a rapid determination of zero is critical to a well-planned fire fighting and rescue operation.
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