On 10 Mar 2004 21:12:59 -0800, (WaltBJ) wrote:

Rule of thumb - O2 over 10,000 feet.

It used to amuse me, in the days before the Eisenhower Tunnel, that
the highway over Loveland Pass in CO took the driver above the
altitude at which the USAF wanted pilots to use oxygen masks.

At Aspen of course we skied all winter at above 11,000 feet. (At
Loveland, the parking lot was higher than that.) Do you suppose that's
why ski bums are famously so unstable?


all the best -- Dan Ford
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