Don Burke
Contributor
Many journalists think oxygen is the only thing in all of our cylinders, so I would not read too much into that.BarryNL:Well, as the article says they are using oxygen masks I guess they're not going any deeper than 4m.
Besides, what would be the advantage to doing this on 100%? You might be able to sell me on the concept of 32 or 36 to avoid decompression obligations on such a long exposure. Most of the programs I have played with come up with an obligation after six hours or so at fifteen feet on air.