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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. It seems to me that the parallel with civilian use of SCUBA in the early 50's is a good analogy. SCUBA was used by a small mission orriented group originally, then was adopted by a larger civilian community. During the past 50 years we've seen SCUBA evolve in the hands of sport users, in the early days there were many problems. I remember taking a marine bio class in '68 from a woman who regularly made dives to 300' on air. We've learned a little since then. The problem is to figure out how to take a technology like closed circuit and deploy it in a way that doesn't sacrifice the level of 'safety' we've achieved with open circuit. I'm not convinced that CC is inherently more dangerous than OC given similar exposures. I am convinced that we don't have nearly the knowledge base about CC operations that we have with OC operations. That's the challenge. Regards, Scott.
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