-4experimental agricultural practices of a small group of caretaker families living there. Neither Bikini Atoll, where radiological clean- up has been completed, nor Enewetak Atoll where cleanup has not yet begun, have a subsistence agriculture resource in being which is sufficient to support the anticipated populations which will one day live there ( though such crops are currently being developed or planned). As a result, some of the dietary items likely to have the higher radionuclides content, e.g., pandanus and breadfruit, are not actual problems to date. They may or may not be of concern in the future as the plantings mature and the fruit becomes available in quantity. Thus, the diets of people living in these two atolls are expected to change over the coming years reflecting the relative influences of imported and locally grown food items. Allowance has been made for this in development of radia- tion dose estimates. Experimental studies at Enewetak mayyield tech- niques to interrupt or break the recycling of radiomuclides through the vegetation, soil, and ground water systems, and thereby reduce the radioactivity content of some important dietary items. All of the afore- mentioned factors will necessitate continuing monitoring of the diet for many years. Periodic sampling and analysis of soil and ground water will be necessary in order to establish trends in the changes of radioactivity content of these media. In the Northern Marshalls, drinking water is obtained primarily from rainwater catchments. While the radionuclide content of collected rain- water will not be zero, this source is not expected to contribute significantly to the radiation exposure ‘picture for future Bikini, Enewetak, and Rongelap Atoll residents. However, rainwater which drains from the windward side of building rooftops may provide useful data on resuspension of radioactivity in the soil. The collection of rainwater by