ACTIVITY/mg (ARBITRARY UNITS) DIAMETER IN MICRONS Fig. 5.6 Gross Activity Concentration vs Particle Size ACTIMITY/mg (ARBITRARY UNTS) io] w 6 ° 590 ' Fig. 5.7 2 3 0 20 50 DIAMETER IN MICRONS 100 200 Activity Concentration of Cat5 ys Particle Size 43 e SECRET-— RESTRICTED DATA ;