Opening the valve into the wind of an evacuated glass flask while the observer
holds his breath to keep from contaminating the sample.
Image ID: corp2702, NOAA At The Ends of the Earth Collection
Location: Mauna Loa, Hawaii
Photo Date: 1982 February
Photographer: Commander John Bortniak, NOAA Corps (ret.)
Category: Observatory/Mauna Loa/Clean Air Facility/
• High Resolution Photo Available