Cheers for that, I have seen this Page a few times unfortunately a lot of the flkr images have been removed and have a fair few images (bylines annual vol.3(I think!) On snowdown colliery, and various other publications (Steam in the coalfields, Those dirty miners, etc and Kesr Bobby's images, I know that the spacing between masts was approx 100ft at Deal yard, but it is the actual height of the masts, diameter, length and diameter of the support bracket and angle of the support for that, plus the conductor and insulators that are crucial ( and of course the correct terminology!) If I am going to going to be able to create something worth presenting to the 3D printer...