In a message dated 2/27/2009 9:27:42 P.M.  Pacific Standard Time, 
[email protected] writes:
Interesting.   Where I first heard of it was about 1977 or so.  The local 
and state  law enforcement types were using it to spot marijuana plots in 
the local  state and federal parks and forests.  Apparently, according to 
some  newspaper articles at the time, the color of a mature marijuana 
plant stood  out quite obviously on ortho film when compared to the 
normal flora of the  Upstate South Carolina forests.

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Thanks,
DougF  (KG4LMZ)

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Heh. Now they use Google.

Marnie  :-)

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