Good advice Harvey. I worked for ten years at 8,100 feet elevation, at a tungsten mine, but lived and slept at 4,200 feet. I was only slightly more acclimated than if I hadn't worked at high altitude, but would have been better to have slept at 8,100 feet every night.
Locals who live in places like Mammoth Lakes, CA, at 8,500, are usually more acclimated to altitude than "flat-landers."
