Language: English Journal Announcement: EDB7704 Subfile: ERA (Energy Research Abstracts); (Technical Information Center). INS (US Atomindex input); TIC Country of Origin: United States Country of Publication: United States Abstract: Our previous studies have established basic population parameters and geographic distribution of rats (Rattus rattus and R. exulans) at . Enewetak. Also documented were /sup 137/Cs and /sup 60/Co levels for selected plant and rat tissues. Additional samples now have been analyzed, and this paper is a detailed extension of earlier (1965), but very limited, data. In addition, recent (1972-1973) survey data by the AEC are presented for correlation. Samples of soil, plant and animal Materials were collected in 1967 and 1971 on Runit Islet on five transects: at the major test site and at distances of 200 m, 1030 m, 1710 m and 2460 m from it. Most of the total external gamma radiation is contributed by /sup 137/Cs and /sup 60/Co. Both isotopes were observed in all soil, plant and rat samples, with concentrations correlated with closeness to the test site and level of physiological activity. Generally (except at the test site) activities of /sup 137/Cs and /sup 60/Co in the top 50 cm of the soil were between 0.1 and 2 pCi/g. In plants the range was between 2 and 200 pCi/g; in animal tissues, between 0.5 and 500 pCi/g. was found.; General agreement with the AEC data Major Descriptors: *CESIUM 137 -- RADIOECOLOGICAL CONCENTRATION; *COBALT 60 -- RADIOECOLOGICAL CONCENTRATION; *ENIWETOK; *PLANTS -- CONTAMINATION; *RATS -- CONTAMINATION; *SOILS -- CONTAMINATION; *TISSUES -CONTAMINATION Descriptors: COMMUNITIES Broader Terms: ALKALI METAL ISOTOPES; ANIMALS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BIOMASS; BODY; CESIUM ISOTOPES; COBALT ISOTOPES; ECOLOGICAL CONCENTRATION; ENERGY SOURCES; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; ISLANDS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MAMMALS; MARSHALL ISLANDS; MINUTES LIVING RADIOISOTOPES; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; RADIOISOTOPES; RENEWABLE ENERGY SOURCES; RODENTS; VERTEBRATES; YEARS LIVING RADIOISOTOPES Subject Categories: 510300* -- Environment, Terrestrial -- Radioactive Materials Monitoring & Transport -- (-1989) INIS Subject Categories: B31* -- Land 10/5/982 00207665 Author(s): (Item 682 from file: 103) ERA-02-023383; INS-77-005948; EDB-77-045392 Conard, R.A. Title: Summary of thyroid findings in Marshallese 22 years after exposure to radioactive fallout Corporate Source: Brookhaven National Lab., Upton, NY (USA) Conference Title: Conference on radiation in associated thyroid c&ncer Conference Location: Chicago, IL, USA Conference Date: 30 Sep 1976 Publication Date: 1976 p 19 Document Type: Report; Language: English Journal Announcement: Conference literature EDB7703 Availability: Dep. NTIS $3.50. Subfile: INS (US Atomindex input); (Technical Information Center). ERA (Energy Research Abstracts); 4080 Report Number(s): BNL-21924; CONF-760939-1 Contract Number (DOE): E(30-1)-16 TIG@=> cD Country of Origin: United States um Country of Publication: United States Abstract: Inhabitants of several atolls in the Marshall Islands were accidently exposed to fallout radiation following a detonation of a high yield thermonuclear device during experiments at Bikini in the Pacific Proving Grounds in March 1954. The most serious acute effects of the exposure were due to penetrating gamma radiation. Contamination of the skin in the Rongelap group resulted in widespread beta burns and