Fractionation effects were simulated by the removal of a fraction of the refractory nuclides from the

calculation. In general, air drops were assumed to be unfractionated, surface and cratering Events were

assumedto have0.4 ofthe refractory elements present, and all other Events were assumedto have0.5 of

the refractory elements present.
Each Appendix contains 11 pages of calculated results relating to one Event in Table 1. Eachsetof 11

pages is marked Page 2 through Page 12 at the top and A2 through A12 (or B2 through B12, etc.) at the
bottom. Page 2 of each set gives the external gamma-ray exposure rates and associated values of total
microcuries per square meter at 30 decay intervals and at zero time. Note that the totals at zero time

include only the nuclideslisted in Pages 3 through 12, notall the nuclides present at zero time. Calculated
values for each radionuclide at various decayintervals are given in the remaining pages—from 1 to 21 hin
Pages 3-7, from 1 to 300d in Page 8-11, and from 1 to 50 y in Page 12. Unless otherwise indicated, the

value for each nuclide at zero timeis the result of a radiochemical measurement. The measurements were
performed on debris samples taken by aircraft approximately 1 to 4h after detonation. The production of

nuclides designated by (*) has been estimated. When no estimate could be made, the value appears as
zero.

REFERENCES
1.
2,
3.

4.

Announced United States Nuclear Tests, July, 1945, through December, 1980, Office of Public Affairs,
Nevada Operations Office, Department of Energy, Las Vegas, NV, NVO-209, Rev. 1, January 1981.
H.G., Hicks, Calculation of the Concentration of Any Radionuclide Deposited on the Ground by Fallout from

a Nuclear Detonation, Lawrence Livermore National Laboratory, Livermore, CA, Preprint UCRL-86177

(1981). Accepted for publication in Health Physics.

E. Hardy, Plutonium in Soil Northeast of the Nevada Test Site, Environmental Measurements Laboratory,

Department of Energy, New York, NY, HASL-306, pg. 1-51, July 1, 1976.
H.L. Beck, Exposure Rate Conversion Factors for Radionuclides Deposited on the Ground, Environmental
Measurements Laboratory, Department of Energy, New York, NY, EML-387, July, 1980.

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