[Mitchell]

A correction to my previous post: In discussing a hypothetical mixture of particle sizes, I meant to say that the large particles would settle on top, and the small ones on the bottom. (This is the so-called Brazil nut effect, and, in this case, it's consistent with the idea that the lower-quality bigger clumps were used first, since they came from the top, with the higher-quality smaller particles only coming out at the end, from the bottom of the container.)

Also, at the beginning of the post, I meant to say: "they apparently had [not has] differences of physical preparation." Sorry -- it's hard to avoid typos when typing in these little text boxes.

[keri]

With all due respect Mitchell, I think the "Brazil nut effect" is irrelevant. If all the spores were weaponized they would all very nearly be the same size. If they weren't, why would they be mixed in one container?

I can only say at this point the anthrax in FL and the DC anthrax did differ genetically. Ridge's report covered what was known at the time -- preliminary analysis revealed anthrax of the same strain -- and further genetic analysis with improved technique revealed the subtle genetic differences between the two. What those differences might mean I don't know. I don't know if they have been resolved or explained, for the private researchers cannot talk about their on-going investigation.

(I'll forgive your typos if you forgive my fatigue) Have a great evening.