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Of course he did. There is absolutely no doubt about it. It is physically impossible to stay 7 days submerged under water, often sleeping for hours at the bottom of the 2.4m tank, without being regularly or permanently purged with O2. If he breathed plain air all the time, the result of the surfacing decompression would be disastrous. And although the final few minutes before the attempt, he breathed on the surface (frankly told, I did not even expect it), he was still saturated with O2, and the air over the water surface very probably too (he kept the regulator on the surface).Haydn said:... Of course it is possible he breathed O2, although I doubt he did.
Well, Paul, that's not too difficult. You just need to pull your head out of the water time to time, and look around on the dry land - there are things happenning too sometimes.pkotik said:...Apparently there were lots of big shots there - I wish I knew who they were. Is there some way to study up on this stuff ? How is it everybody else knows who these people are ??