Sd 290 Radio Statian Weather Station (N and of island 160 Lo 20 Proj 6.6.Station (S end cf tslani’ 240 _- In order to estimate the rate cf decay between 8 and 11 March, the follow ing radiation measurements were taker o three days on Rongelap Island: 8 March ii March Central. living area (village 280 mr/hr 17@ or/nr Roof of cistorn (Southern most 240 mr/hr 40 or/nr Southern most cistern 220 mr/hr Ground (contact) cistern »res 145 ar/hr 220 mr/hr 119 or/hp An area wag @wlected 30 yards insand from the Rongclap cemetery as a mas. ing point for fytame decay acasurcacnts, This arca is outlined with 2X%4e placc on pails, The waist height reading was 21¢ o/hr at 1000 hours, 11 March 1954, 7. Sample co.lections Water samples were collected from the wtcr supplics of all inhabited arcas, About two quarte of water wore transferred to a polyothlenc bottle at each site, Thes will be turnec over ‘. the Vow York Oporations Office, ABC i- analysis, Soil sampicswore colicectec at all inhabited aroas and also at sovera’ uninhabited islands. In collocting tho soil samples a onc foot by onc foot square was martedon the ground anc soil to about one inch of depth was remove. from the square and transferred tc 4 cardboard containcr. Tho primary samples will be turned over ttho New York Yporation Office, ASC, for analysis, and some smaller samples will bo analyzec by Program 2 of TU 13, Listed in Table 3 arc the samplos taken with the doso rato measured at waist height at th location wom thoy wore takon, ABLE3=SOL SampleNo. Atoll yt Ronge lap 3 Rongelap 2 Ronge lap Island Date Rongelap (North end) rh Yonge Lap 5* Git “pe RongelLa p Rong elap RongeLap of village’ Eriirtppu Endiaetox Kabe Lin Rongerik ia.Lingi nae Pniwetan Sif ge 9 LO ii Jt ix ik Sdicr + -+ 8 Mar LLO 8 Mar 340 Rongclap (Center of village) Rongelap (1 mile north of village) Rangelap (naar South cistern Jearin Sikar #5mall «dditicnaj sampia ¢ MrAir 8 Mar 8 8 8 8 280 Mar Mar Mar Mar 220 2200 900 2000 10 Mar 10 Mar 280 100 9 Mar 9 Mar LO 160 ' analysis by Program 2 of TU 13. — &