Hydrogen is the lifting agent used in the Hindenburg. Though the Hindenburg was originally designed for helium, a non-flammable gas because most of the world's supply of helium comes from natural gas fields in the United States, which had banned its export under the Helium Control Act (1927), the builders at Luftschiffbau Zeppelin had to adjust to using hydrogen.

The switch from helium to hydrogen did not cause much concern because of the Germans extensive experience with hydrogen as a lifting gas and that accidental hydrogen fires had never occurred on civilian Zeppelins.

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