80-G-68744 Fire Fighters Schoo, Navy Yard, Mare Island, California, February 1943. “Orco Diving Mask” is demonstrated to show comparison with Navy Shallow Water Diving Hood. This mask is used in depths up to 100 feet. Note: M.S.A. Cotton Web Type Safety Harness. Official U.S. Navy Photograph, now in the collections of the National Archives. (2016/08/09).
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