80-G-707437:  Deep Sea Diving School, Naval Gun Factory, Washington, D.C. At the end of the third week, the student begins actual diving in the “open” type tank.  In this tank, he is indoctrinated in the use of the diving suit under only ten feet of water, released February 3, 1950.     U.S. Navy Photograph, now in the collections of the National Archives.  (2016/06/14).
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