Re: Oxygen

Date:         12 May 99 02:48:52 
From: (Herb Feldman)
Organization: The Los Angeles Free-Net
References:   1
Followups:    1 2
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timma wrote:
> Can anyone tell me how we survive breathing oxygen above 12K in aircraft
> without oxygen masks??

 Normally, airliners have their cabins  pressurized to 8,000Ft., regardless
of how high above 8,000Ft the plane flys.
As a general question of high can someone go with out oxygen, climbers have
have reached the top of Mt Everest (29,000Ft) without supplemental oxygen.