BIKINI EXCAVATIONEXPERIMENT The object of this experiment is to demonstrate removal on reducing the concentrations the effectiveness of soil of 137CS in the soil, and thus plants, at Bikini Island and whether crops could be grown on the remaining nutrient deficient soil. A 1.5 acre plot was cleared of all trees and excavated to 40 cm depth. A con- trol plot of the same size, where only trees were removed and no excavation occurred, In situ tion. was established immediately adjacent.to gamma spectroscopy measurements the excavation were made prior and subsequent to excava- Soil profiles were also taken before and after excavation. different site. About 30 plant species were plaited in the excavation and control plots. All plants in the excavation the exception plot received micro-nutrients and N, P, K, with of one row of various plants which received only micro-nutrients. All plants were carefully irrigated and fertilized as required. The piants generally did very well with this careful attention to nutrient and water supply. The unfertilized row is vastly inferior to the fertilized rows. Thus, plants can be grown on the nutrient deficient soil if adequate nutrient and water are applied correctly. This requires a significant commitment for a long period of time if excavation is the selected cleanup option. The in situ gamma measurements and the analysis and control plots show a significant decrease that of Eneu Island. 22 of samples from the excavation in 137CS to levels at or below