[LIMITED] Scuba Diving don’t fear death fear the un-lived life poster

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From  story above. If this shirt is relating to your life, please feel happy to order this shirt : 

 Scuba Diving don’t fear death fear the un-lived life poster

Nitrogen Scuba Diving don’t fear death fear the un-lived life poster narcosis limits the depth reachable by underwater divers when breathing nitrox mixtures. In 1924 the US Navy started to investigate the possibility of using helium and after animal experiments, human subjects breathing heliox 20/80 (20% oxygen, 80% helium) were successfully decompressed from deep dives, In 1963 saturation dives using trimix were made during Project Genesis, and in 1979 a research team at the Duke University Medical Center Hyperbaric Laboratory started work which identified the use of trimix to prevent the symptoms of high-pressure nervous syndrome.Cave divers started using trimix to allow deeper dives and it was used extensively in the 1987 Wakulla Springs Project and spread to the north-east American wreck diving community.

                

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