Fallout from Nuclear Detonations of February and April 1960

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Science  14 Apr 1961:
Vol. 133, Issue 3459, pp. 1130-1131
DOI: 10.1126/science.133.3459.1130


A sharp increase in the ratio of strontium-89 to strontium-90 in rain was observed at Fayetteville, Arkansas, after the French nuclear detonations of February and April 1960. Experimental data obtained suggest the possibility that part of the debris from atom bombs detonated in the tropical region may enter the stratosphere.