There was a programme last night on Channel 4 in the UK about the Hindenburg - "What Destroyed the Hindenburg?" where a group of scientists created some 1:10 scale models of the airship and then destroyed them to see which looked destruction looked similar to that which actually happened.
It was quite fascinating and had some (very) short clips of actual footage of the Hindenburg being constructed.
The team on the programme created four airships and destroyed them via bomb, thunderstorm strike, flammable paint on the skin igniting and via a hydrogen leak escaping up the ventilation shafts and then being ignited by the "St. Elmos fire" effect as the grounded zeppelin was now a different change to the atmosphere around it.
The Bomb was very close, the thunderstorm and flammable paint failed to have the same effect (although they destroyed the airship nicely), but the last effect seemed to do the trick, destroying the replica in almost the same way.
In the UK you can probably catch the programme on 4OD. Apparently this is part of the Curiosity series on the Discovery Channel, so it'll probably be around. There is the FAQ for the Curiousity episode here which details these findings. All in all, worth a watch.http://dsc.discovery.com/tv-shows/curiosity/topics/what-destroyed-the-hindenburg-episode10-faq.htm
. Interestingly, the Curiosity programme lists anywhere from 3-5 scale models being built, but you actually see four!
So, next time you're leaking hydrogen and you're in a potential storm zone, my advice is to wait before you try and land...