[Southack]

"After the anthrax attack they retrofited to use vacuum systems. Most of the aerosolization occurred when anthrax contamination on surfaces was hit with blasts of air at high pressure."

There may be some confusion over terms. "Aerosolization" in terms of WMDs is not about just blowing spores with compressed air.

You can blow pure anthrax with compressed air and you'll still be seeing large clumps of spores moving around.

Moreover, the Senate anthrax letters weren't being blown with compressed air when opened, yet their anthrax samples readily aerosolized.

[muawiyah]

Actually, they saw it disperse into a cloud of invisible particles ~ in fact, it was invisible unless you used chemicals to test for it.

How big do you want your "clumps" to be? 1 spore, 2 spores, 3 maybe?

[muawiyah]

The opening unit at the Senate office building uses a high degree of negative pressure so that any contaminant is sucked away from the people opening the mail. This operation has been relocated to a different building with much more elaborate equipment. I would not be surprised to find them equipped with ultraviolet sanitizers.