Sra Locality RongelapI. Levels of beta radioactivity of plankton collected from Rongelap lagoon in 1958... First count Collection Collection No. Pilate Month No,.1958 and day uc/kg series 1958 ash March 1 Tow 9-16 date second count Month and day uc/kg 1958 ash .24 11-20 .20 .32 11-21 .33 ai 2 1 5001 " 3 5003 noN " Aug. 16 Tow " yoK ne 2 1 2 3. 5005 5023 5022 5021 " 10-22 " " .O77 6.8 3.5 4.6 11-18 11-19 11-19 " . 103 4.5 3.5 2.9 " Eniaetok I. " Aug. " 18 " Tow 5 1 5027 5026 " 10-22 4.2 3.3 " 11-19 3.2 2.7 KabelleI. " Aug. " 21 " Tow " 1 i 5006 5028 9-16 11-18 1.1 43 11-18 " 3 5030 " " Kabelle I. " Rongelap I. " " tt " " " " " "1 tt mon March9 t " " " " " " Tow tt 1 4 5002 5004 5019 '' Tows 2-5 5020 ros 6-7 5024 " " 8 95025 " " " " 2 5029 tt " 9-16 tt " " " " tt 4 5031 wt t tt tt tl 5 5032 t " 6 5033 1 5017 Aug. " " 15 Sta. ro" moN 2 3 5014 5015 3.7 2.6 1.6 .66 1, tt Enigan Pass 3. 4 1.3 im Pigen Pass South Pass . 33 " " iy . 37 tt "1 " " " 11-21 " Third count Month andday yuc/kg 1958 ash Preservation of plankton alcohol . 34 tt " " 11-19 " " " 3.8 3, 0 2.7 2.7 1.3 62 52 74 1.25 -0¢- Table 4. t L1-21 2.7 11-19 1.0 11-20 . 99 " " " " " dried " fresh " " " " " l i! ! . 63 uw " i" . 88 tt tt 10-22 " " 5.7 .021 .034 11-20 " 11-21 4.0 .021 .019 alcohol " " W