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Science 23 May 1969:
Vol. 164. no. 3882, pp. 951 - 952
DOI: 10.1126/science.164.3882.951
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Articles

Interhemispheric Transport of Atmospheric Fission Debris from French Nuclear Tests

B. D. Palmer 1

1 Department of Chemistry, Henderson State College, Arkadelphia, Arkansas 71923

Radioactive iodine-131 (half-life, 8.06 days) and barium-140 (half-life, 12.8 days), released into the atmosphere (21°S, 137°W) by the French nuclear tests conducted during the period 24 August to 8 September 1968, have been observed in rainfall at Arkadelphia, Arkansas (34°N, 94°W). The maximum time required for the transport of the debris from a mid-southern to a mid-northern latitude appears to be about 3 weeks.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)