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Helium is also used as an inert shield for arc welding, to pressurize the fuel tanks of liquid fueled rockets and in supersonic windtunnels.
Helium is found in natural gas deposits from Texas, Oklahoma and Kansas. You can find helium gas in blimps and balloons.
Helium is combined with oxygen to create a nitrogen free atmosphere for deep sea divers so that they will not suffer from nitrogen narcosis.
Helium, in liquid form, is identified as an important cryogenic material and is used to study superconductivity and to create superconductive magnets.
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