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To: grusum who wrote (63473)6/12/2006 3:27:17 PM
From: shades  Respond to of 110194
 
i can't find any evidence that radiation from gold would remain high for many years..

I have found much on radioactive gold - but there are rational explanations for each - for starters:

vanderbilt.edu

orau.org

At some time during the 1930s and 1940s, gold seeds that had previously contained radon-222 were melted down by an unknown individual or individuals. Presumably this occurred somewhere in New York State. The gold, contaminated with the long lived decay products of radon (Pb-210, Bi-210 and Po-210), was mixed with uncontaminated gold and used to manufacture jewelry.

But that was because the radon was mixed in with the gold.

washingtonpost.com

A plant report included in the lawsuit filings may shed light on the degree of contamination in the gold. In a radiological survey of the plant last year, technicians discovered gold flakes inside an old ingot mold used for gold recovery. The fish scale-sized flakes were tested and found to emit radiation at a rate of 500 millirems an hour, the report said. By comparison, the average person receives between 200 and 300 millirems each year from all sources, including X-rays, radon gas and cosmic radiation from space.

Yet the ingot probably was still emitting radiation - if that was pure gold and they had taken the radiation tests several months after removing the flakes from the ingot - I believe they would not find such high levels of radiation in the gold flakes as the longest lived isotope is only in months.

and another:

jnm.snmjournals.org

Treating with radioactive colloidal gold - transient effects

bnl.gov

The Right Element for the Job
Like a carpenter chooses the right tool for his task, the physicians must also choose the right radionuclide for a nuclear medicine procedure that will help find and/or treat his or her patient's cancer.

On March 29, BNL researcher Leonard Mausner will present the newest components of the experimental toolkit, made through a team effort in the radionuclide and radiopharmaceutical research program in the BNL Medical and Biology Departments. He will also describe each isotope's individual uses.

For example, a short-lived form of radioactive gold can be attached to a cancer-specific antibody, to help locate and treat tumors in the body. And a form of fleetingly radioactive platinum shows promise in treating tiny breakaway cancers throughout the body of a patient being treated for a larger, central cancer.

Perhaps in the past if you subscribe to the ancient astronauts theory of history gold/silver had medicinal purposes that was lost to time and history. Nuclear medicine is interesting.



To: grusum who wrote (63473)6/12/2006 3:43:49 PM
From: shades  Respond to of 110194
 
www10.antenna.nl

Radioactive gold from CIS. Last July almost five kilos radioactive gold were confiscated by Polish customs officers from a citizen of the Commonwealth Independent States (CIS). The traveller carrying the gold didn't know that his treasure was radioactive, and took no preventative measures to avoid damage from the radiation. The Police are trying to find our if the gold comes from the Chernobyl region or from a research laboratory. Kurier Polski, 28 July 1993, reprinted m: Diari de Tarragona (Spain), 29/7/93.

Perhaps this was freshly made gold - he just needed to wait a few months probably and the radiation would have subsided. Perhaps it was gold mixed with radon or other nasty things.