Demonstrating oxygen mask. After arriving at 11,000 feet altitude fresh from sea level, one often feels the need to perk up a little with oxygen before starting the day's work.

Image ID: corp2706, NOAA At The Ends of the Earth Collection
Location: Mauna Loa, Hawaii
Photo Date: 1982 February
Photographer: Commander John Bortniak, NOAA Corps (ret.)


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