CO eee 160 290 Radio Station 110 -_— Weather Station (N end of island) 280 Proj 6,6.Station (S end of island) 240 In order to estimate the rate of decay between 8 and 11 March, the follow ing radiation measurements were taken on three days on Rongelap Island: 8 March Central living area (village) Southern most cistern Roof of cistern (Southern most) Ground (contact) cistern arca «280 220 240 220 12 March arfnr’ or/hr or/nr mr/hr 176 145 140 110 orfnr mr/nr mr/nr ar/hy An area was selected 30 yards inland from the Rongeclap cemetery as a mas ing point for future decay measurements, ‘on pails, 7. This arca is outlined with 2X%4s plac The waist height reading was 210 or/nr at 1000 hours, 11 March 1954 Sample collections Water samples were collected from the water supplies of all inhabitec areas. About two quarts of water were transferred to a polycthlenc wettle at. each site, These will be turned over to the New York Operations Office;s AEC fF , analysis. ' “Soil samples were collected at all inhabited arcas and also at sevore uninhabited islands, ‘In.collccting tho soil samples a one foot by one foot square was markedon the ground and soil to about one inch of depth was remover from the square and transforred to a cardboard container. The primary samples Will be turned over to the New York Operation Office, AEC, for analysis, and some smaller samples will be analyzed by Program 2 of TU 13, listed in Table 3 are the samples taken with the dose rate measured. . at waist height at the location where they wero takcn. TABLE 3 ~ SQIL Atoll island i 2 Rongelap Rongelap Date fir Rongelap (North end) Rongelap (Center of village) 8 Mar & Mar LL0 280 Lh - Rongelap village) Rongelap (near South cistern 6 Mar . 340 5% Rongefap Eriirippu 8 Mar . 2200 } Rongelap 8 Mar 2000 10 Mer 10 Mar 280 100 3 Ct ex 9 10 i+ Rongelap Rongelap (1 mile north of of village) Rongelap Utirik Bikar Rongerik AiLinginae =, 6 Mar - Eniaetok _ 8 Mar Kabelle - Utirik Bilar Eniwetak Sifo #Smill additional sample taken for analysis by Program 9 Mar 9 Mar Do Samplo No. ~~ 220 900 L0 160