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> The gas Richard reported to the charter operation was 19/30 or 19/33
> according to every account I have received. But that information came
> from Richard. Was Richard covering up a mistake he made in
> blending??? I later received information from several sources the gas
> in his BC was analyzed and the contents were reported to be (depending
> on the source) between 18-19% O2 and 30-35% He.
Just a note for everyone out there who may find themselves having to do a
body recovery of a diver using a gas mixture other than air:
Upon finding the body at depth, first carefully note and record which
cylinders are turned on, and which are turned off. Next, turn all
cylinder valves off, before bringing the body up to the surface. If the
tank is empty at depth, it will be at greater than ambient pressure at
the surface.
If we had not done this on the Atlantis diver I helped recover, the
contents of the supply cylinder would have continued to drain while we
brought the body to the surface, and we would not have discovered that
the supply gas contained 85% O2, when it should have had 40% O2.
A little forethought on a situation as critical as a body recovery can
sometimes preserve extremely critical bits of information.
Also, it would be ideal to take a videocamera to record as many details
about the scene as possible.
Aloha,
Rich
Richard Pyle
Ichthyology, Bishop Museum deepreef@bi*.bi*.ha*.or*
1525 Bernice St. PH: (808) 848-4115
Honolulu, HI 96817-2704 FAX: (808) 841-8968
"The views are those of the sender and not of Bishop Museum"
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