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CW1DR5H5I64A t1_irt6uky wrote

The vast majority of Airships already used helium. All of the US navy Air Ships stationed at Lakehurst Naval Air Station (where the crash happened) all used helium.

The Hindenburg (and other German airships) only used Hydrogen because of sanctions from WW1.

They knew it was dangerous, but they weren’t allowed access to the safer helium.

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