ne 6. The levels of radiation intensity at the distances of Rongelar and Rongerik were much higher than expected, and sooner than expected since necessary information in this range of yield for surface shots today is <he result of some scaling, up from much lesser yielcs, interpretation cf upper wind field patterns, coupled with forecast changes and experience of indivi- us with such limited data as IVY-:0%E, GHEZNEHCUSE-DOG, EASY, GSChGS and 7. After seeing BRAVO cloud project pictures (taken from an airplane) with large quantities of visible particulate matter falling through the cirrus deck above the camera plane from tropopause and above, «ind data to great heights (i.e. up to at least 100,000 feet) is a must for shot tine since the fall-out problem for surface or near shots of large yields can be a definite fimction of the mushroom as well as the very hot stem of the cloud. sppantin . I - Plot of General Fall-cut Pattern. II - Forecast and Observed Hodo- graphs, B-2 to Bf7 days. ~~ OT - Tabulation of Time of Arrival Data IV - Hodograph Trend Data ABiomgapeand CAPT, JSN