Fallout from the Chinese Nuclear Explosion of 17 June 1967

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Science  29 Dec 1967:
Vol. 158, Issue 3809, pp. 1692-1693
DOI: 10.1126/science.158.3809.1692


Low-level activities of iodine-131, barium-140, and strontium-89 were found in a series of rain samples collected at Fayetteville, Arkansas, during the period from late June through August 1967. The ratios of these short-lived isotopes to strontium-90 were determined as accurately as possible. The data indicate that the debris from the Chinese nuclear explosion was injected primarily into the stratosphere.