http://www.nytimes.com/2008/08/04/us/04anthrax.html?bl=&ei=5087&en=24b191a01376d45d&ex=1217995200&adxnnl=1&pagewanted=2&adxnnlx=1217869395-n8ctfr6gSbIrmzKpUG85Mw<snip>
Yet from the beginning, public glimpses of the investigators’ work prompted serious questions. “What has bothered me is the unscientific, bumbling approach of our investigators,” said Representative Rush D. Holt, a Democrat and physicist whose New Jersey district includes the contaminated Princeton mailbox.
Mr. Holt said in a recent interview that his first doubts came after anthrax was found in his Congressional office in October 2001 but investigators never returned to conduct systematic testing to trace the path of the anthrax spores.
After that, he said, when contamination at a New Jersey postal processing center indicated that the letters had been mailed on one of a limited number of routes, it took investigators seven months to test several hundred mailboxes and identify the source.
“Within two days they could have dispatched 50 people to wipe all those mailboxes,” Mr. Holt said. He wrote to Robert S. Mueller III, the F.B.I. director, on Friday to ask that he testify to Congress about the investigation as soon as it is closed.