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Read some of David Swain's letters to chiropractor Mary Basler as part of the full Dateline report The Last Dive from Friday, July 6th, at 9pm/8c.
Read David Swain's letters to Mary Basler
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Technical point...they weren't breathing 'oxygen' as stated in the story, they were breathing compressed 'normal air' - just sayin': Normal air contains about 78 percent nitrogen and 21 percent oxygen. Trace gases, such as argon and other inert gases, make up the last 1 percent of air. Most recreational, open-water scuba divers use tanks filled with normal air.
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