Somewhere in the house I have some of the video he shot.....but finding it? I'll try.
Unfortunately unlike the excellent pictures on this site underwater video is not of the best quality. There soon appears a murk from all the loose rotting timber. He was also only able to take video in the lesser depths due to the pressure (not just the mental pressure!).
One other thing I recall him saying was that from the end of one of the crosscut tunnels he not only saw the Bonser vein but also he could see the cast iron rising main (that you can see in Deep Level tunnel) weaving its way up the vein.
Good comment about "empty vessels" how true.
One amusing thing he says in his book is that when he takes groups diving around the world its amazing how many blokes say to him that they are in the SAS or Special Forces!! He was unaware such a large percentage of the population was so well trained yet were totally unfit and unable to do simple dives!
Bravado and blokes.
Jeff