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At 09:07 PM 7/10/1996 -0700, Scott Cherf wrote: >At 3:53 AM 10/7/96, gmiiii@in*.co* wrote: > >> Why does this not ever get mentioned, or surface at >> these "seminars". >> It all >> may look new to you, but is is very old. > > I didn't mean to say that the technology was really new, > I believe that rebreathers actually pre-date compressed > gas SCUBA diving, but it is new in the sense that it > hasn't been generally deployed. ------look what I found on the NZ DIve Log site----------------------- "It is interesting to note that today the use of EANx in closed circuit systems is being hailed as a revolution in diving technology. However, I have among my records an Australian article from 1951, entitled 'Spearmen Adapt Breathing Outfits'. It reports on the use of Salvas rebreathers by Australian divers. It is noted that this unit used a cylinder containing 16cf of oxygen at 1800 psi, which was effective to ten metres. Deeper than that, the cylinders were charged with a mixture of 60% nitrogen and 40% oxygen, and were considered safe for a diver to use to 36 metres. This mix is what, 45 years later, is designated EANx 40. Deja vu!" ------------------------------------------------------------------------ rgrds billyw
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