Thread: Coffee geekery
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  #5  
Old 09-04-2019, 12:28 PM
P.C. P.C. is offline
A Talent for Obfuscation
  
Join Date: Feb 2013
Location: In the Deep State
Posts: 20,058
I think that I saw pictures like those provided by the OP in a book I once read on the Manhattan Project...
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