Never mind. I was struggling to remember 'skin effect', and the effect is reliant on a high frequency current.
Go ahead and reply if you want though, I'll watch just in case. I went to a Physics forum already and stated the same concept and none could recall 'skin effect' without the exact reference I guess.
I would have thought a super collider operator would know of the concept and law though.
Here is a link to a Fermilab paper on the issue, note the active chart which shows the variance:
http://fermi.la.asu.edu/w9cf/skin/Thanks again.