ne s 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 renge of yield for surfece shots today is <be result of some scaling, up from auch lesser yielcs, interpretation cf upper wind field patterns, coupled with forecast changes and experience of indivi- aus with such limited data as IVY-:0%5, CHEZNECTSE-DOG, EASY, SOCHSS and TEM. 7. After seeing BRAVO cloud project pictures (taken from an eizplane) with large quantities of visible particulate matter falling through tbe cirrus deck above the camera plane from tropopause and above, «ind date to great heights (i.e. up to at least 100,000 feet) is a mist for shot tise 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. Appendix: I = Plot of General Fall-cut R. He i CAPT, JSN Pattern, It ~ Forecast and Observed Hodo- graphs, B-2 to B/7 days. I - Tabulation of Time of Arrival t Deta IV ~- Hodograph Trend Data Perea pe ee