Papers Deepest Ocean Dive (UDEL.edu) "On January 23, 1960 — the day of Trieste's historic dive to the bottom of the Mariana Trench — the waves were 5 to 6 feet high in the ocean when Jacques Piccard (Auguste's son), and Navy Lt. Donald Walsh boarded Trieste from a rubber raft." "The nearly 7-mile descent to the deepest known point on Earth took 4 hours and 48 minutes." "At a depth of nearly 7 miles, the pressure is crushing, exceeding 16,883 pounds per square inch (more than a thousand times greater than the pressure at sea level)." 08-09 Deepest Ocean Dive (Wikipedia.org) "In the Trieste the pressure sphere provided just enough room for two people. It provided completely independent life support, with a closed-circuit rebreather system similar to that used in modern spacecraft and spacesuits: oxygen was provided from pressure cylinders, and carbon dioxide was scrubbed from breathing air by being passed through canisters of soda-lime. Power was provided by batteries." 08-09

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