My understanding from the news reports and the NSS-CDS report was he was in panic trying to ascend then toxed (he was seen going into convulsions). Given the mix, the fact he was doing work, and was narked, its possible a combination of a CO2 hit and narking got him panicked when he say a O2...
Gareth Locke has an analysis here that is quite good: An HF perspective of the Roaring River Fatality
I pointed him to the video from Gus on Facebook too, as he seemed not to be aware of it.
I honestly hope this makes things better. And for all the grief we gave him here, I am glad Gus talked...
Well that's the real issue I suspect. A little normalization of deviance perhaps allowed the SOP to not be matching best practices with gas management. And this is not the first time that a person on that team was at 190+ ft with an inappropriate gas for the depth....
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