AECD -3446 -16Section LIT GENERAL PROCEDURES by e A. H. Seymour and L. R. Donaldson AREAS SAMPLED a: 3 pe As in 1948, collections were made at both Bikini and Eniwetok Atolls a but in addition control material was also collected at Likiep Atoll, also in the Marshall Islands group, and,about 300 miles east of Bikini. The col- lection of control material from an environment similar to Bikini and Eniwetok but somewhat removed from those two bomb experiment areas provides data by which a threshold can be established for determining the uptake of radioactive isotopes by biological systems in the bomb areas, The areas sampled were as close as possible to those sampled in 1948 which included six major stations at both Bikini and Eniwetok Atolls and several minor stations. Ata major station fish, invertebrates, and algae were collected from the lagoon reef, terrestrial plants were collected : ee from the island, and a land survey for radioactivity of the adjacent area was made, Ata minor station, activities were not as complete and included wo a dip net by light, collecting plankton, collecting samples off buoys or a gee about the atoll as shown in Figure | and were located at Boro, Namu, Amen, Bikini, Enyu, and Erik Islands, Plankton and water samples were col- lected while the LSIL 1091 was at anchor off Bikini island and in-the Target Area; dredging, which provided both invertebrate and algae samples, was carried on off the Bikini-Amenreef and in the Target Area; algae and invertebrate samples were also collected from the buoys in the Target Area; fish traps were set off the Bikini-Amen reef, in the Target Area and off Bokon Island; and fish were caught by hook and line at anchorage off Bikini Island and in Ruji Pass. Bikini samples were collected between July 25 and August 4, 1949. Of the six major stations at Eniwetok, three - Engebi, Eberiru, - eRsti ga ARIES “univ. OF Ba At Bikini the six major stations were distributed geographically hy eth, Aig combination of more than one of these activities. aetna or either dredging, fishing with hook and line, fishing with traps, fishing with ef ; ene . - 1 ‘ or 4