RPM,
There are a few straight forward processes and (thankfully) a few major problems for someone who wants to produce Anthrax spores.
1) Getting the Anthrax culture is hard for an individual but easy for a government - have the Ministry of Health order a commercial culture from a laboratory supply firm for 'medical research'. Iraq ordered (and received) Anthrax and other 'interesting' cultures from US and European firms in the 1970's.
There have been some new reports this week that the Florida cases were from a strain of Anthrax isolated by the University of Iowa in the 1950's. This strain is widely distributed to labs around the world.
An individual must (now) start with soil from a farm which had an Anthrax outbreak in the last 50 years. Culture the soil in media favorable to Anthrax and isolate the Anthrax. ( Sophomore college laboratory techniques are needed.)
Produce enough of the sample (steps 2 through 5) and test it. (On animals? Mail it to a tabloid? ...)
Robin Cook had a book (fiction) in which an Anthrax culture was prepared this way, I don't remember the books title offhand.
2) Separating a pure culture of the Anthrax bacteria from a mixed culture is fairly simple. The old C L Stong Amateur Scientist column in the Scientific American had several articles on microbiology in the 1950's and 1960's. These articles included the technology for preparing pure cultures. (Advanced High school techniques are required here.)
3) Mass replication. Have you ever home brewed beer? Same technology. Prepare culture medium that you bugs like, keep it sterile until you add your culture, keep it at the right temperature. Repeat until you have enough. Its the same basic technique for both yeast and bacteria.
4) Induce the Anthrax to enter the spore state. This is a harder problem. There should be techniques documented in the microbiology journals to stress the Anthrax bacteria and induce spore formation.
5) Prepare a cleaned preparation of the spores produced in 4. The spores naturally clump. The clumps of spores are large enough that they can not be inhaled into the lungs. The surface of the spores must be washed to remove the sticky and then dried. My assumption from the public information is that this requires repeated wash and centrifuge operations. What is used to wash the spores without bringing them out of the spore state is secret. This is extremely hard.
The dried residue must then be broken up. Simply grinding (as in mortar and pestle) the sample may destroy the spores.
The estimate from a former director of USAMRID (on TV last night) is that at most 5 Americans could do this without years of research.
There are however several hundred (or thousand) Russians, Iraqi and North Korean's who know how to process Anthrax.
ABC news is reporting that the NBC Anthrax was a brown granular powder. Basically a stage 4 product on our scale. The Anthrax sent to Tom Dashile's office was a pure white, powder fine preparation, which was as good as (and almost certainly is) a government preparation. It will be interesting to find out why we are dealing with two different Anthrax preparations in envlopes wth the same style lettering, with the same postmark.
Soaking paper in liquid Anthrax would probably not be effective. There would be no chance of any airborne effectiveness and only limited chance of of a skin infection.
Droplets of Anthrax in water would be large enough that they could not be inhaled deeply and would quickly settle out of the air.
Ed