o Zz 38 3 &= iobz|€ Sa 5 7 7Yy, Y Yj) %9 a 50 100 IE 2 15 Z E ots zy 5 2 0 —— SEVERAL TO 500 MICRONS LLL 100 150 200 PARTICLE z al ° Ww ; ~«1SO.~-~©200.~SO.~«SOO~C~«OSS~«C«SC PARTICLE DIAMETER, MICRONS cry sacie aT 49 MINUTES 8 MILES CROSS WIND , 50 w —— SEVERAL TO | 4200 MICRONS . 250 henshehanembankenheylandantenhenteohedd 300 DIAMETER, MICRONS 350 400 STN 540.16 AT 107 MINUTES 8 MILES CROSS WIND o 'St2 EK ae iolz ; 10 a. So 2 0 ——— SEVERAL TO 1,200 MICRONS 0 50 100 = ” t E DIAMETER, 8 i L BB. } MICRONS <7y 540.15 AT 99 MINUTES 1§ MILES CROSS WIND = x“ O 15,2 rs L 180.—'—«i200—‘ RS 300—si=380—« PARTICLE DIAMETER, MICRON = < 10 65 Oo , ° X 50 100 ———— SEVERAL TO ih 150 200 250 300 PARTICLE DIAMETER, MICRON » i 350 tL 400 j MICRONS STN 540.15 AT 135 MINUTES iS MILES CROSS WINO Fig, 4.10—-Size distribution of radioactive particles as a function of time and distance, 45