51.   All four were found to be free of anthrax spores.

52.   Burning destroys anthrax spores that otherwise can remain viable in soil for decades, waiting to be blown or kicked onto grass and eaten by unlucky cattle or deer.

53.   But anthrax spores can be produced in a dry form suitable for weapons and can be fatal to humans even in microscopic amounts.

54.   But biological weapons disseminating the dry, odorless, tasteless anthrax spores can kill a victim in just days.

55.   But both drugs are also generally expected to work against infections caused by anthrax spores.

56.   But although the nasal swabbing continued wherever anthrax spores showed up, epidemiologists soon discovered that it was of little use in detecting illness.

57.   But anthrax spores in dry form can be used for germ warfare.

58.   But anthrax spores that had puffed out of the first envelope during the sorting process evidently settled on the second.

59.   But EPA officials found anthrax spores on all three floors of the building, although not in the ventilation system.

60.   But bentonite is now infamous, because it can be used as a possible anti-static additive in powdered anthrax spores.