2. Historical Resume 2.1 Nuclear Test series in the Marshall Islands Seven series of tests involving the detonation of 59 nuclear devices were conducted by the United States in the Marshall Islands during the interval July 1946,through July 1958. Griggs and Press (1960) have summarized available unclassified information relative to these tests. 2.2 Early Environmental Studies In the spring of 1946, the initial series of tests, Eniwetok, just prior to the beginning of environmental studies of Bikini, Rongerik and Rongelap Atolls were undertaken by the Underwater Studies Group of the U. S. Navy Bureau of Ships with the cooperation of the Geological Survey, Military Intelligence Division of the Chief of Engineers, Institution, the Smithsonian the University of California's Scripps Institu- tion of Oceanography and Division of War Research, University of Michigan (Revelle, 1954). and the Following the deto- nations a radiobiological survey of Bikini Atoll was undertaken by the Applied Fisheries Laboratory of the University of Washington, the first of many such surveys to study the effects of nuclear weapons tests on marine biota.

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