I thought this was an interesting experiment ...... http://www.youtube.com/watch?gl=GB&hl=en-GB&v=Pr2lrksp318
1st July 1916 One witness to the detonation of the Hawthorn Ridge mine was British cinematographer Geoffrey Malins who was filming the 29th Division's attack. He had his camera set up about half a mile away, trained on the ridge and waiting for the explosion.
