During this time he was a member of the 1921 Everest reconnaissance expedition, using photographic surveying techniques.
2.
On the third EVA of the mission, two areas on the underside of the shuttle where photographic surveying identified protruding gap fillers were dealt with.
3.
One of the Air Board's first responsibilities was managing the operation of over 100 surplus aircraft that been photographic surveying, and anti-smuggling patrols.
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