From: Phillip Huggan (cdnprodigy@yahoo.com)
Date: Thu Aug 11 2005 - 15:44:07 MDT
The A-Bomb was the 1st man-made technology to be an extinction risk. No amount a conventional explosives can effect this. This is why nukes are sl4 and conventional firebombings with much higher explosive yields and casualty figures are not sl4.
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