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Bill Elliott <bill@nw*.co*> wrote:
>         For those interested, it's my understanding that  the Spherical
>bottles were non-magnetic for the military and were made from Inkonol (sp)
>or something like it, not to mention to military spec which makes EVERYTHING
>more expensive.  With these wonderful spheres, even a home-made magnetometer
>couldn't pick you up as you mined a ship! Ain't technology grand.  ...

Actually, a lot of these rebreathers are used for mine clearance.  The
fancy kind of mine (not the round black things with the horns, but the
ones that lay on the bottom and go off under the 4th tanker to pass over
on an alternate Tuesday) are equipped with "anti-diver devices".  The
idea is that if it can tell you're there, by bubble noise, magnetic
anomaly, or whatever, then if it utters the one word in its vocabulary
(BOOM!!!) you won't be disarming any of the other mines in the area.
With a nice quiet non-magnetic rebreather, a well-trained, careful solo
diver has a fighting chance.

-- 
Anthony DeBoer                                  http://www.onramp.ca/~adb/
adb@he*.re*.or* (here)
adb@ge*.co* (work)                             #include "std.disclaimer"

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