- — ~ Phenomenon Kill crushing overpressure " dynamio pressure (wind force) ; : thermal penetrating radiation ScalingFactors 6 psi 1 psi wh/3 lpsi 0.1 pat wi/3 10 cal/cm* 2 cal/em* W, D* . 5000 r (inmediate) 700 r (delayed) induced contamination n fallout n craters Approximate Safe .. W, D _ 0,1 x/day wed 25-50 r " less than 1.5 w/3 ae crater radii 2 w/3 ywi/3 fireball The presentation was aided by a large number of "height of burst charts" for the various weapons effects, Some of the points brought out were the following: There is a "bonus factor" in the scaled effects (on a light steel frame structure, for example) of 1 MT versus those of 1 KT, due to the longer wind duration with the higher yield explosion. Against aircraft, dynamic pressure and penetrating radia- tion effects seem the most important. (For a 2 KT shot against a 5-29 at 10,000 ft the 5000 r radiation envelope reaches out farther than the thermal and wind effects, except in certain directions in which the last have a greater lethal range. At 40,000 ft radiation has a larger lethal radius than any other effect.) With respect to surface contamination, induced activity predominates over fallout for high altitude bursts. we ee DOE ARCHIVES