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U.S. Department of Energy
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DISTRIBUTION AND CHARACTERISTICS OF FALL-OUT AT DISTANCES GREATER THAN 10 MILES FROM GROUND ZERO, MARCH AND APRIL 1953

Technical Report ·
OSTI ID:4034063
Detailed studies were made of the fall-out measurements made at distances greater than 10 miles from Ground Zero of Shots 2, 3, 4, 5, and 7 of Operation Upshot-Knothole. Shots 2, 5, and 7 resulted in downwind areas of moderate to high-level contamination, with the maximum contamination occurring at 15 miles from Ground Zero of Shot 7; a field dose rate of 1630 mr/hr and a surface contamination of 18,580 mu c/ft/sup 2/ were observed at this location. Particle-size studies of settled material indicate an inverse relation between median diameter and distance. Empirical relations derived from the data are presented. (D. L.C.)
Research Organization:
California. Univ., Los Angeles. Atomic Energy Project
NSA Number:
NSA-15-023769
OSTI ID:
4034063
Report Number(s):
WT-811(Del.)
Country of Publication:
United States
Language:
English

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