Cesium-137 and J are responsible for { the total predicted both have radiological about 30 years. environmental re acting to reduce sium-137 and J inventories so that the me is significantly less irs, then the predicted : much lower, and longuse plans in the atolls ered. study the mechanisms, nd controlling features ide cycling in the Jur goal is to find ways the flow of radiosubsistence foods and e available inventory radiological dose assessment, resettlement began in 1970. In 1972, the people of Enewetak also asked to retum to their home.islands, and officials requested a detailed radiological survey and dose assessment. This dose assessment, conducted under LLNL technical direction, identified many areas where more precise data were Bikini and EneuIslands to provide the data needed. The most recent phase of our Marshall Islands research, a comprehensive survey ofall the islands at Bikini Atoll (Fig. 1) and 12 other atolls downwind of the Enewetak-Bikinitest sites (see the inhabitants. Accordingly, LLNL conducted a survey of each at Dose in 1973 tified te: most sic posure } pathway Fig. 2}, began in September of 1978. The purpose of this survey needed. Thus, a field research proj- (and the dose assessment that it will produce) is to evaluate the ect was Jaunched in 1975. In that same year, a second phase of housing construction was planned for Bikini Atoll, and careful planning of the location of the housing project was requiredto minimize external radiological exposure to Dose as extemal chains, i water. Cesiu radiological condition of atolls that could possibly have intercepted some fallout in excess of worldwide levels as a result of the testing program. Nearly 12 000.soil, vegetation, fish, water, sediment, cant rad counts f collected and processed; and cant radi such as :1 and animal samples have been analysis is about 60% complete. dose ob locally g exposure reachesi foods, is s of our assessmentat oll are listed in Fe ingestion dose in- re or sane OESy i reget “, a Se Ftae 2 el eae e pe we yg EEa Sa TELS ue to food and water, b , a ALE et Pete ae.ns Newnesee 4 OE = 2 ie * 7 . cP mee Fopruueaane i ke ilinginae®. Pye “ e baveatetd ‘ ne esae ‘ST wT. io Tes oa = Fe pe aSER St { vaeer ot: 2 lation dose is negligibout 60% of the food seople of the Marshal! orted. However, when unavailable (because elays or weather rey must subsist on foods. Hence, two are specified. ites predicted for the af the atoll are much * ?. a CRPeeat earner: J z 2 100-mrem/yr ose (at sea level) in 2ver, the maximum predicted for Enjebi northern part of the yach the current ran individual (500 c). Table 2 lists the Q IPEG. 7 Islands. In 1946, prior to the start of the Pacific nuclear testing program, the Enewetak people were relocated to Ujelang Atoll and the Bikini people to Rongerik Atoll. From 1946 to 1958, 23 tests were held at Enewetak and 43 at Bikini. In 1948, the Bikini people were movedto temporary facilities Kili Island, a small island near M and 1973, some of the Bikini peopl and in August 1978 they were agai and several other atolls. At presen Bikini Atoll.