-18- factors were based on calculations made from comparison with primary standards obtained from the National Bureau of Standards. Table 4. Summary of the radionuclides present in island soil from Kabelle Island, July 18, 1957. Values expressed in d/m/g of dry soil as of February 1, 1958 Per cent of Radioisotope d/m/g Ce!44_py144 Fe?5 19, 100 18, 600 Ru!06_Ry,106 4, 160 9.09 33.9 Sb 125 1, 710 3.74 15.9 Eu!55 646 1.41 5.5 gr90_y90 614 1.34 3.77 cs!37 370 0.81 11.4 Mn°4 355 0.78 13 Co”? trace C08? 160 Zr95-Np?5 Total total activity Correction 41.7 40.6 0.35 16.8 112 21.3 -- 43 0.09 45, 758 99.91 *The correction factors (C.F.) were used to convert e/m to d/m for each isotope. factors* 12

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