Hindenburg was filled with hydrogen. The fire risk is why blimps use helium today.
That, and the fabric skin was doped with what amounted to rocket fuel.
Though at the time they didn’t know their doping agent was solid rocket fuel.
You and two others discovered what I did.
I was wrong. I appreciate the mention.
Oops!
http://www.freerepublic.com/focus/news/3228850/posts?page=50#50