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> "Thank God All Divers Live" is the mnemonic that safe cave divers live by. > When these STANDARDS began being followed the number of cave fatalities > dramatically fell (Standards do work) Yes, but it's not the "standards" that kept people alive. It was the fact that they didn't do stupid things. Standards do not replace discipline and intelligence. Standards discourge thinking and understanding. > T - Training, Proper training is required to dive caves. > G - Guidelines, Maintain a continous guideline to a verticle ascent. > A - Air, The Rule of Thirds (Third in, Third Out, Third Reserve) > D - Depth, Don't cave dive an EAD deeper than 130 feet (narcosis) > L - Lights, Carry a minimum of three working lights. All very excellent advice learned by many people, some who survived close-calls, others who did not. If you made the "D" standard 100 feet, would fewer people die? If you made it 150 feet, would more people die? Who decides where to draw the line? I'm not being antagonistic -- if there is an answer out there (some statistical analysis of diving accidents at different EADs, for example), I'd really like to hear it. Like I said, 130 feet is my own EAD on a rebreather. Same for mixed gas diving. I don't know what it is for air diving anymore, because I've only done one air dive this year and it was to about 100 feet max. Aloha, Rich
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