Subfile: (NTIS) . ERA (Energy Research Abstracts); INS (US Atomindex input); NTS Country of Origin: United States Country of Publication: United States Abstract: This report updates, for 1980 through 1982, the results of continuing medical surveillance of a Marshallese population accidentally exposed to radioactive fallout in March 1954. The originally exposed Marshallese population comprised 64 persons on Rongelap Atoll who each received, on the average, an estimated 190 rads of absorbed external gamma radiation, 18 on Ailingnae Atoll who received 110 rads, and 159 on Utirik who received 11 rads. There were, in addition, 3 persons in utero on Rongelap, 1 person in utero on Ailingnae, and 8 persons in utero on Utirik who are considered exposed. The recipients of primary medical care include exposed and comparison populations as well as a rather large number of additional beneficiaries who are seen on a humanitarian basis of practical need and resource availability. In recent years, about 1400 people have been seen annually. This report, however, deals with four clearly defined groups: the remaining individuals who were exposed to radioactive fallout on Rongelap, Ailingnae, and Utirik in 1954 (including those in utero), and a comparison population of individuals from Rongelap who were unexposed. The number of persons now in each exposure category are 51, 12, 116, and 137, respectively. 100 references, 4 figures, 5 tables. (ACR); Major Descriptors: *HUMAN POPULATIONS -- MEDICAL SURVEILLANCE Descriptors: DATA COMPILATION; GAMMA RADIATION; IMMUNITY; MARSHALL ISLANDS; MORTALITY; NEOPLASMS; RADIATION DOSES Broader Terms: DATA; DISEASES; DOSES; ELECTROMAGNETIC RADIATION; INFORMATION; IONIZING RADIATIONS; ISLANDS; MICRONESIA; NUMERICAL DATA; OCEANTA; POPULATIONS; RADIATIONS; SURVEILLANCE Subject Categories: 560151* -- Radiation Effects on Animals -- Man 560161 -- Radionuclide Effects, Kinetics, & Toxicology -- Man INIS Subject Categories: Ci500* -- Effects of External Radiation on Man C2110 -- Radioisotope effects, kinetics & toxicology in man 10/5/664 01462059 (Item 364 from file: 103) ERA-09-044576; EDB-84-159864 Author(s): Marsh, K.V.; Buddemeier, R.W. Title: Marine plankton as an indicator of low-level radionuclide contamination in the Southern Ocean Corporate Source: Publication Date: Report Number(s): Lawrence Livermore National Lab., Jul 1984 UCRL-53549 p 41 CA (USA) Order Number: DE84016306 Contract Number (DOE): Document Type: Report; Language: English Journal Announcement: W-7405-ENG-48 Numerical data NTS8409 Availability: NTIS, PC A03/MF AOl. Subfile: NTS Abstracts). (NTIS); INS (US * Atomindex input); ERA (Energy Research Country of Origin: United States Country of Publication: United States Abstract: We have initiated an investigation of the utility of marine plankton as bioconcentrating samplers of low-level marine radioactivity in the southern hemisphere. A literature review shows that both freshwater and marine plankton have trace element and radionuclide concentration factors (relative to water) of up to 10/sup 4/. In the years 1956-1958, considerable work was done on the accumulation and distribution of a variety of fission and activation products produced by the nuclear tests in the Marshall Islands. Since then, studies have largely been confined to a few selected radionuclides, and by far most of this work has been done in the northern hemisphere. We participated in Operation Deepfreeze 1981, collecting 32 plankton samples from the U.S. Coast Guard Cutter Glacier on its Antarctic cruise, Pacific Northwest Laboratories concurrently sampled air, while Battelle water, rain