Does an announcement that no anthrax was found mean with certainty that none is there?
William H. Grubbs
Among the first respondents to a report of an anthrax threat are hazardous materials units dispatched by local, state, or federal agencies. They work with law enforcement officials to examine buildings and investigate envelopes and packages that are suspected of containing toxic substances. One of their first tasks is to collect the sample that represents the initial threat and send it to a laboratory for testing.