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Rich
I understand from Jim Bowden that Argonox was initially employed to try
and give the dive team an advantage in terms of N2/He offgassing, but since
nobody was prepared to run schedules as regards half times etc, it ws decided
that the information they had was sufficient to use it and cut tables based on
it being AIR for decompression penalty purposes.
It is interesting to note that for Jim's proposed dive to finally answer the
questions as regards the depthh and geography of Zacaton the proposal is to run
thr dive as follows:-
(1) Run air to the maximum tolerable narcosis depth (circa 90 metres)
(2) Switch to an 'intermediate' Trimix.
(3) Switch to bottom mix.
(4) Reverse the above until the switch can be made to an Eanx mix of 1.6 ppo2 -
including switching back to air @ 90 metres).
(4) Possible use of Argonox at the shallow stops.
(5) Following Jim's 'hit' it has been decided to employ an underwater habitat
to allow him to get onto O2 at a higher ppo2 than 1.6 in relative safety and
also to able to recieve introvenous fluids to prevent dehydration due to water
temperature and extended (circa 10 - 12 hour) in water times. I promised to
write to Jim and the team to see how things were going and will post any info.
Regards
Chris
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