I think my instructor used a much safer method to show me the effects of narcosis at depth. He found a place (40 Fathom Grotto) where the environmental conditions contributed enough to narcosis that a depth of 160 ffw was sufficient to make the point. No deep air required ! Try it out instructors - you can get the required air dives out of the way and move on to the coast for another environment. Too expensive? Too much trouble? Safety has never been cheap or easy ! Chuck -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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