brittle, and would not dissolve in the usual solvents for millipores suggesting possible radiation damage, , The ESP fared little better, some 70 ft of film at the start of the run being permanently glued together on the reel. Usable portions of the film, however, showed active deposits very similar to those of Shot 4, except that the spots were on the order of 1 or 2 mm in diame ter , The active spots contained densely aggregated crystals containing Na, Ca, and Mg. It is believed that the aerosol from this shot was identical to that of Shot 4, with the possible exception of having a slightly higher liquid-solid ratio, 4010205 P State of Activity on Air Filter DMT and MP filters were also used as a source of activity for physical state studies, MP samples were dissolved in a suitable solvent, and thoroughly dispersed by ultrasonic agitation. The specific activity was then determined, after which an aliquot was centrifuged* and the specific activity of the supernatant again measured, yielding fractions of activity associated with the insoluble residue and liquid portions, Shot Sample i (oun) TABLE 4.1 - Physical State of Activity Per Gent fotal Activ Insoluble Solvent Weak Acetic Acid Willian (DMT ) 2 Water Kingpost Ethyl Acetate YAG 39 (MP) " 4 Solids \4 * % 0 76 23 1 95 - - Flying bridge} Water YaG 39 (DMT) Deckhouse Acetone 89 10 1 98 - - Flying bridge; 49 47 4 - - Water YaG 40 (DMT) Kingpost sthyl Acetate | 97 bed (b) 95 YaG 39 (MP) (a) (b) 4 Acetone YAG 40 (MP) 5 Tonic 0.1 Values for MP samples include colloidal. Acetone decanted after centrifugation, water added to centrifugate and electrodialysed. Air-driven, capable of settling 0.01 to 0.2 py: diameter gold scl at approximately 20,000 RPM. 92