Anthrax and Afghanistan

Al Qaeda operatives in Afghanistan began to assemble the equipment necessary to build a rudimentary biological weapons laboratory before the Sept. 11, 2001, attacks

Two biological weapons experts who have read the letters said in interviews Friday that the letters suggested that the laboratory construction was at an early stage and that it would have most likely been at least two to three years, if not more, before the Qaeda team would have been able to produce enough anthrax to use as a weapon.