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They interviewed Nicholas Priest, a radiologist from Middlesex University, and he said that the anti-static brushes people are talking about here would be too hard to extract a usable quantity from.
This is what he said:
A third way of getting polonium would be to try and extract it from anti-static brushes, which are used in the photographic industry, and you would have about the right amount of polonium there, but it would be very difficult to extract. And these brushes are made so they're difficult to tamper with, and so they're safe.
http://www.pbs.org/newshour/bb/health/july-dec06/poison_11-30.html
Since he was a professional radiologist USING HIS OWN NAME, I believe hm over people posting on the Internet under completely made up names.