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At 10:29 PM 9/28/00 +0900, Gary Hagland wrote: > From someone who lives outside the U.S., the problems with He are that its >expensive and the U.S. controls the world's supply. Why did the Germans use >hydrogen in the Hindenburg? Helium was hardly available in those days for any of us. Also, hydrogen is cheap and has the lowest density so it seemed like a good idea at the time. > Why are the French experimenting with hydrogen >for use in breathing mixes? To off-set HPNS and to lower the density of the breathing medium -- even helium turns soupy at 300m/1000' + >Although we Americans think of ourselves as the >most wonderful people on the planet, some folks don't want to rely on us. >One storage bottle of He outside the U.S. is $200 or more. That's what it >costs here in Japan and that's what I've been told it costs in France and >other European countries. The price is correct, but most helium in Europe comes from Algeria in north Africa. The US has the world's best supply of helium since there's atypically high amounts of helium in your gas reservoirs. Now, for diving in remote areas: Here's a splendid case for considering CCR or SCC -- if you ship in an expensive bottle of helium you'd really want to get a good mileage. regards, Hans -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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