Which do you think is less dangerous at 160ft? Open-circuit air or CCR trimix?

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old frogman:
I suspect the overall risk rating may be higher for CCR?
Click to expand...
Depends on the specific scenario. FWIW, my comments early on in this thread were based on this likelihood/consequence view.

Also, don't conflate the number of risks with "overall risk". An airplane has a higher number of risks compared to driving cross country, but flying is much safer overall.
 
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