EZ,
Reductions not linear, but fractions of the balance from what I understand.
As for the lions share- definately, and thats exactly why GEL has burnt many good relationships with other miners in Otago. They claimed and excluded essentialy anything worth looking at, for now, but word is they have missed the boat on some fine spots, so the technology while flash is not infallable.
For the record EZ, I didnt buy into GEL, so am watching from the sidelines with interest. One of Otago's wisest miners suggested I didnt, so I threw my cash into URA with a 20% increase already thanks to DrillFix's wise words...