£On ry ONKaas Rox AIROK NikAn JEKOLEK AN JEROLE KAW k LOK NAL RAME ION FRAME ROK LOTEN ROK ? EN TDN BATITEN MOKLANES MONIT RVEN ER AP MALAdiL? nalhis z <3z EBREN BONY MAB z 2 _ ™ te 4 Fig. 4. The geographical variability of the gamma-ray exposure rates (uR/h)} measured 1 m above the sround on Bikini Island. The contributicen due to cosmic stracted. radiation has been The contours were sub- drawn on the basis of the cata shown in the Appendix. The straight lines dravn across the island cenote baundaries of land parcels (watos) owned by the families whose names appear in the upper parc of the photograph. -9-