08-08-2012, 09:49 AM
As has been stated going underground the earths mag field for all practical purposes will be the same whatever state that field might be in above the surface, but if a large EMP were to occur by whatever means the I would guess that anything underground would be progressivly protected the further and deeper down it was situated so from the EMP point of view of that chaps original explanation then would he be correct?
Lawrence.
Lawrence.
