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-- [ From: Mike Sandler * EMC.Ver #2.5.02 ] -- I "speculate" the only thing "concrete" in this situation is your skull. 'Technical' diving is not cheap, nor does is it appear to be for you! This type of diving is about placing safety and success of the dive as the paramount criteria! The only hint of intelligence you seem to posses with respect to diving is the fact that you know Norman and Anne, your a fool not to benefit from the teachings of these two EXCEPTIONAL diving instructors. I suggest you end your "second guessing" of Norm and Anne ( probably the only two instructors TDI has who are worthy of teaching advanced diving - from what I hear ) and start listening to them. OR you can save your money and stay out of the water. Mike -------- REPLY, Original message follows -------- > Date: Saturday, 10-Feb-96 11:55 AM > > From: Michel Therrien \ Internet: (m.therrien@ne*.qc*.ca*) > To: Andy Barclay \ Internet: (andy@le*.ca*) > cc: techdiver@terra.net \ Internet: (techdiver@terra.net) > > Subject: Re: (not so) deep air / EAN deco > > >There is a local TDI instructor here in Ottawa (very good reputation) who > >has recently started decompressing on either surface suplied O2 or 50/50 > >nitrox. He has also stated that decompression times longer than about > >20 minutes on air are unsafe. > > > >I have seen studies that say doing deco on EAN can decrease the incidence > >of DCS by 2-3 times, HOWEVER, I can't find any studies that show what > >the rate of DCS is on long deco on regular Air. > > > >To decompress on pure O2 or on Nitrox is going to cost my wife and I at > >least 20 bucks a dive. This can amount to some substantial bucks. > >What I want to know is: "Is air deco really 'unsafe', or is it just less > >safe." Does anyone have numbers about DCS hit rates with deco on different > >gases? I'm really looking for concrete numbers here, not speculation. >
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