The E-Sylum:  Volume 7, Number 50, December 12, 2004, Article 21

RADIOCATIVE NUMISMATICA

  Dan Freidus writes: "When I was using neutron activation 
  for elemental analysis of coins, some back-of-the-envelope
  calculations quickly made it apparent that one would 
  need a license to store radioactive material after doing
  NA using the whole coin irradiation method on silver 
  coins (for even a medium sized research project).  I 
  mainly work on copper coins so it wasn't much of an issue,
  and I used microscopic samples instead of entire coins.  
  The Federal government decided to stop funding the 
  University of Michigan's reactor so there no more 
  "M Glow Blue" and if I want to use NA in a future project,
  it will probably be *much* more expensive."

  Wayne Homren, Editor

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