63 Note 8 fo determine whether or not the determination of specifi activity of soil and plants made by the Livermore Laboratory correct, a field trip took place in December 1987 during whi samples were collected at 7 locations running the length of as ngelap island and on 3 islands of Ailingnae Atoll. The samples wer collected under the supervision of Dr. H. Paretzke by Liverm technicians and Rongelap men. Senator Anjain and other Rong lap citizens were present. The results show that the Livermore technique is an acceptable one. At each location, the exposure rate was measured, and i found to check with the data reported in Table 4.1 #1. was The samples were frozen and shipped back to the Livermo e Laboratory where they were divided so that one-half of each as sent to Dr. Paretzke in Europe, the other being retained for anal sis by Livermore. Dr. Paretzke shared his samples with Dr. Ute Boi at of Bremen. Each laboratory prepared its own material for analysis Jrom the he results from elsewhere. frozen field material, and then analyzed it without knowing The means of the results for Rongelap Island have been inserted into Table 4.2 #2,; the results from single samples have not been so used since their agreement or disagreement with those previo sly obtained would be fortuitous. — The results, corrected back to 1978, may be summarized follows. Drinking-coconut meat: the mean and range of values fo samples are: Boikat-Paretzke, 3.6 (1.1-6.2) pCi/gram-fresh; Livermore, 4.4 (1.2-7.9) pCi/gram-fresh. The assay of drinking-coconut meat can vary considerabl because the more mature the nut, i.e., the closer it is to t e copra nut, the higher will be the meat's specific activity. Int present case, of the 7 samples (each composed of 5 nuts), 3 ere typical of the drinking stage, 1 was questionably more matur , and 4 were intermediate between drinking and copra stages. It is interesting to note that the cesium-137 mean for the 7 samp 4.3 pCi/gram-fresh, intermediate between the drinking nut ( pCi/gram) and the copra nut (6.2 pCi/gram) of previous determinations (Table 4.2 #2). For coconut juice taken from the nuts whose meat was a above, the mean for 7 samples was 1.6 pCi/gram. Previous s averaged about 1.3 pCi/gram (Table 4.2 #2). (Cont 8 was 3 lyzeed pling