[@Skepic]Would you mind if I import Kavuria from you?
If it's really better than hydrogen and non-combustive then I have no need for helium.
I suppose your processing methods are also working with far better yields than what they had for helium (which is why it was less affordable in WW2), which means your Kavuria is either cheaper or about as expensive as helium.
Long story short I'm sold.

In return I can ship you various Mithril variants for aircraft frames. They are pretty efficient for that purpose.