“In my opinion, there are maybe four or five people in the whole country who might be able to make this stuff, and I’m one of them,” said Richard O. Spertzel, chief biological inspector for the U.N. Special Commission from 1994 to 1998. “And even with a good lab and staff to help run it, it might take me a year to come up with a product as good.”
http://www.washingtonpost.com/.....ge=printer

“For nearly a decade, U.S. Army scientists at Dugway Proving Ground in Utah have made small quantities of weapons-grade anthrax that is virtually identical to the powdery spores used in the mail attacks that have killed five people, government sources say.”
http://www.ph.ucla.edu/EPI/bio.....pores.html

“Dugway’s Life Sciences Division makes the deadly spores in far, far smaller quantities, rarely accumulating more than 10 grams at a time, according to one Army official.”
http://www.ph.ucla.edu/EPI/bio.....pores.html

“It has been estimated that the perpetrator used a total of about 10g in the letters.”
http://911review.org/Wget/www......report.htm