330-PSA-115-65 (APA-65-166):  Water Mines.  Master Sergeant Joseph C. Westmier explains the operation of the captured Viet Cong mines to Master Sergeant John D. Spooler.  The largest mine is normally filled to the base of the cone with 43 pounds of explosives, the hollow cone provides buoyancy enough to float with a low silhouette.  Primarily for use against river patrol craft, junks, and cargo ships, the mines are electrically detonated.  Photographed at Saigon, Vietnam, May 24, 1965.  (2015/11/10).
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