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On Sat, 21 Oct 1995, Michel Therrien wrote:
> 
> In 1988, Exley had an light implosion on a dive to 780 feet.  In my
> understanding, the light was tubular...
> 
> When I took my mixed gas course with him, in 1993, I remember him telling us
> that the Dive Rite lights are more suitable for deeper diving as they use
> the battery to couteract the external pressure.  If I remember correctly, he
> was using a Dive Rite canister which was sealed at the company (not with the
> o-ring and clamps) for his few lasts dives.
> 
> May be someone has more information...

Lamar English told Exley to flood his battery canister at the beginning 
of the dive.  The thinking being that for one dive, this would be OK.  
Meaning the light would work for the duration of the dive, and not 
implode due to the liquid.  He did, but not enough.  
RT

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