Rongelap Island 2 years after the March, 1954, nuclear detonation, readily detectable amounts of both ..beta..- and ..gamma..-radiation were present. The activity was attributable to /sup 60/Co (I) to the extent of 63 and 85% of the gross ..gamma..-activity. As it is not a component of fission products, it is assumed that it was induced from an environmental precursor possibly /sup 59/Co, by the neutron flux accompanying the detonation. It was not detected in samples collected one year after the detonation; this points to an enormous concentrating capacity of Tridacna gigas.; . Major Descriptors: *COBALT 60 -- UPTAKE; *MOLLUSCS -- RADIOECOLOGICAL CONCENTRATION; *NUCLEAR EXPLOSIONS -- FALLOUT Descriptors: BETA PARTICLES; BIOLOGICAL ACCUMULATION; COBALT 59; GAMMA RADIATION; MARSHALL ISLANDS Broader Terms: ANIMALS; AQUATIC ORGANISMS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHARGED PARTICLES; COBALT ISOTOPES; ECOLOGICAL CONCENTRATION; ELECTROMAGNETIC RADIATION; EXPLOSIONS; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; INVERTEBRATES; IONIZING RADIATIONS; ISLANDS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MICRONESIA; MINUTES LIVING RADIOISOTOPES; NUCLEI; OCEANIA; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; RADIATIONS; RADIOISOTOPES; STABLE ISOTOPES; YEARS LIVING RADIOISOTOPES Subject Categories: 520302* -- Environment, Aquatic -- Radioactive Materials Monitoring & Transport -- Aquatic Ecosystems & Food Chains -(-1987) 450200 _-- Military Technology, Weaponry, Explosions & Explosives 10/5/885 (Item 585 from file: 00651816 EDB~80-091341 Subfile: TIC & National Defense -- Nuclear 103) Title: Radiochemical analysis of radio-nuclides in sea water collected near Bikini Atoll Author(s): Miyake, Y.; Sugiura, Y. Source: Pap. Meteorol. Geophys. (Tokyo) (Japan) v 6. Coden: PMGTA Publication Date: 1955 p 33-37 Document Type: Journal Article Language: English Journal Announcement: EDB8008 (Technical Information Center). Country of Origin: Japan Abstract: A radiochemical analysis of sea water containing fission materials collected near Bikini Atoll in June, 1954, was performed. sea water was boiled with hydrochloric acid, each 5 mg as Fe and La were added to it. hydroxide, The iron and lanthanum salts They were precipitated as which was dissolved in hydrochloric acid and ferric chloride was extracted with ethyl ether. The remaining solution was evaporated to dryness and the residue was dissolved in hydrochloric acid. Using the latter solution the group separation was done with cationexchanger resins.; Subject Categories: 520301* -- Environment, Aquatic -- Radioactive 9004 Major Descriptors: *FISSION PRODUCTS -- RADIOCHEMICAL ANALYSIS; *SEAWATER -- RADIOCHEMICAL ANALYSIS Descriptors: BIKINI; CATIONS; FALLOUT; ION EXCHANGE; RADIOISOTOPES; RESINS; 2 SAMPLING; SEPARATION PROCESSES Broader Terms: CHARGED PARTICLES; CHEMICAL ANALYSIS; HYDROGEN COMPOUNDS; IONS; ISLANDS; ISOTOPES; MARSHALL ISLANDS; MICRONESIA; OCEANIA; ORGANIC co 0 COMPOUNDS; ORGANIC POLYMERS; OXYGEN COMPOUNDS; PETROCHEMICALS; PETROLEUM PRODUCTS; POLYMERS; RADIOACTIVE MATERIALS; WATER Materials Monitoring & Transport -- Water -- (1987) 450200 -- Military Technology, Weaponry, & National Defense -- Nuclear Explosions & Explosives 10/5/886 (Item 586 00651737 EDB-80-091262 Author(s): Kimura, from file: 103) Title: Analysis of radioactive fallout of the atomic bomb explosion on Bikini K.