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While government apologists are still trying to pretend there is a case that Bruce Ivins was the anthrax killer, tests by Sandia National Laboratories have exonerated him.

As the publisher of the prestigious scientific journal Nature writes:

At a biodefence meeting on 24 February, Joseph Michael, a materials scientist at Sandia National Laboratories in Albuquerque, New Mexico, presented analyses of three letters sent to the New York Post and to the offices of Senators Tom Daschle and Patrick Leahy. Spores from two of those show a distinct chemical signature that includes silicon, oxygen, iron, and tin; the third letter had silicon, oxygen, iron and possibly also tin, says Michael. Bacteria from Ivins' RMR-1029 flask did not contain any of those four elements.

Two cultures of the same anthrax strain grown using similar processes — one from Ivins' lab, the other from a US Army facility in Utah — showed the silicon-oxygen signature but did not contain tin or iron. Michael presented the analyses at the American Society for Microbiology's Biodefense and Emerging Diseases Research Meeting in Baltimore, Maryland.

It had previously been known that the killer anthrax contained silicon - an agent for weaponizing anthrax. But I have never previously read that the killer samples also contained iron and tin.

As the world's top anthrax experts have pointed out, Ivins did not possess either the know-how or the equipment to weaponize the anthrax. See this and this.

In addition, as Nature points out:

Ravel also sequenced the genome of a Bacillus subtilis strain that was found in one of the letters. That sample did not match a B. subtilis strain found in Ivins' lab, says Bannan, but the bacterial contamination still could have come from somewhere else in Ivins' institution.

There is simply no credible evidence incriminating Ivins.

Authors Bio:
George Washington

As a political activist for decades, I have rejoiced in victories for the people and mourned in defeats. I chose the pen name "George Washington" because - as Washington's biographies show - he wasn't a very good strategist, but he was incredibly persistent. He hung in again and again during the worst setbacks and bleakest winters for years. That is what made him great: he simply refused to quit. George Washington therefore inspires me to be a life-long activist.

As an attorney and former law school professor, I am a firm believer that no one - even the high and mighty - are above the law.

As someone trained in environmental systems analysis, I am always looking at how different trends influence each other ... and the big picture.