a ooa6e0 (2) W = 1000 to 10,000 KT: @, = 1.0, b=0.7, g=0.8, ip20 145 The curves, of course, show more variability with distance than with yield as would be expected from use of Eq. 35 in Eq. 24. The com- putations were extended to include somewhat greater distances than those used in obtaining the empirical equation coefficients to investigate the shape of the curves at distances where lf approached the value 1.0. With fallout pattern data in r/br at 1 hr, curves for other assumed weapon types and likely heights or depths of burst can he calculated to obtain possible ranges in the fallout mass deposited per unit area. This information can then be used directly in operational evaluations of decontamination methods and in establishing the experimental conditions for investigating the efficiency of the methods. ou 69 Va