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ALL IHFDPEATIUH CONTAINED &#39; HPEIN I3 UNCLQSSIFIED . mm 12-1;-">:|>:|a BY "U354 1 5» 7. lV-B Bentonite feed stock G D u Wm In no growth seen <1.2 X 105 CFU per gram! Visual inspection of suspensions of the material under phase contrast microscopy demonstrated very poor preparations of spores. The preparations were all highly granular and did not easily go into suspension in sterile water for injection. Individual preparation observations: Samples: 1. Vlll-B 21 June 95 ~ Dried BT powder - very granular when suspended; many spore clumps; numerous non-refractile spores; not a good preparation at all; fewerthan half of the material consists of refractile spores 2. Vll-B Spray drier - BT - very granular when suspended; a great deal of large clumps of spores and debris; about 2/3 of the material are refractile spores 3. l-B Dried powder - very granular when suspended; a lot of debris; no refractile or non-refractile spores seen  4. IX-B Spray-dried BT - very granular when suspended; many spore clumps; numerous non-refractile spores; not a good preparation at all; fewer than half of the material consists of refractile spores 5. Vl-B Dried powder from fermentor run - very granular when suspended; many spore clumps even more than in preps 1 and 4!; numerous non-refractile spores; not a good preparation at all; fewer than half of the material consists of refractile spores 6. V-B 21 June 95 - Dried powder from spray drier - very granular when suspended; many spore clumps even more than in preps 1 and 4!; numerous non-refractile spores; not a good preparation at all; fewer than half of the material consists of refractile spores 7. lV-B Bentonite feed stock - very granular when suspended; a lot of debris; no refractile or non-refractile spores seen interpretations and conclusions: lf these are preparations of bacterial