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Jeffery Frautschy (center) and two unidentified men shown here were deploying a bathythermograph instrument into the Pacific waters during the MidPac expedition. The MidPac expedition was a joint venture by Scripps Institution of Oceanography and the U.S. Navy which discovered the Mid-Pacific Mountain Range on the bottom of the Pacific Ocean. 1950.

Jeffery Frautschy (center) and two unidentified men shown here were deploying a bathythermograph instrument into the Pacif...