Here we go again... 

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I read in a non-authoritative source that the CNS depression from heavy (200ft+) nitrogen narcosis was known to protect against the O2 toxicity. Does anyone have a reputable source (either way) on that?
gotta love this avatar though of post #3. It's the only thing original in this thread
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Now how can I convince vinegarbiscuit to change his avatar to something obnoxious . . . :sly: