12 boys lost in flooded Thai cave

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Any idea why AFP divers using Nitrox for such shallow sump diving?

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Maybe they don't have nitrox in them. There's no law that says that a nitrox banded tank needs to have nitrox.
 
All sorts of random tanks have been lent to the effort. Aside from any specialized stuff the CDG guys brought in, I'd hazard a guess that most of them are random AL80's from various dive operations throughout Thailand.
 
Very sad.

The Thai SEALS are tough, but they're not as a unit cave trained, they're working with their existing training to get those kids out. The tip of that spear is rather specialized, including the sump and cave divers, but there is a lot of support needed behind it in a flooded cave system. I would not expect that they will stop.
 
Car exhaust is carbon monoxide, CO. People in confined space is carbon dioxide, CO2. I'm sure 'air quality in sump spaces' is sump diving 101. And the world experts are there. I wish we had the data, but the experts are there.
I’ve heard with modern vehicles it’s had to commit suicide by poisoning yourself with CO.

Put yeah, CO2. You can endure quite high CO2 levels but it sucks. A high enough level will kill you, but it needs to be very high.
 
All sorts of random tanks have been lent to the effort. Aside from any specialized stuff the CDG guys brought in, I'd hazard a guess that most of them are random AL80's from various dive operations throughout Thailand.

and I'm wondering how those tanks are getting filled and if they're analysed. (lots of machinery around, vehicles - going from the site pics)
 
@JohnnyC - WELL SAID!

. . . (Snip)
The kit worn by the rescue divers might seem alien to some, but the standard DIR Config wouldn't stand up to this sort of diving.(snip)

Please explain more fully. I'm not a cave diver and haven't been super curious about the gear used since the DIR wars abated. In those days, DIR was totally against side mount. Go figure

I can't really tell what the divers are using and would appreciate your take and especially that of any cave divers here.

Speculation in response is fine with me.

Thanks.
 

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