rat hc cn tattle el im a me lens erent to aSeis To setadlish an empirical relationship between beta dust activity on the groun and ganme rediatiot intensity at throe feet over the ground, selected comparative data have teen plotted. (Figure 28). a Fig. 28 The values selected are Limited to the first 2k hour perlod of significant fallout following a given burst. beta activity has been extrapolated from counti:g date to sampling date. The paccity of values ig due to incompl:te data; dust samples are misaing in certain instances and moniter fatlurwe occurred at various tines, QETA OUST PER SQUARE FOOT VS Gash INTENSITY AT 9 FEET T.e values presented are preliminary. Nurther review of the available data say disclose additional cseful comparisons and a refinement of Saat UTEMSETY ~ + wee fan et ted man computations may alter the existing values somewhat. po ‘ ret giig! eo Poy dead: cee : je betas dion‘ ' LE at tt bebo by s a so 7ees aserainses® alge . i s s Me . es @ % w&