I understand that IDC has been using a non destructive assay...

I understand that IDC has been using a non destructive assay process.
This becomes unreliable after grades of 90 gpt ton or more.
It is likely that some of these assays (when re assayed with aqua regis methodology) will reveal extra-ordinary ultra bonanza numbers (possibly near 1,000-1,500 grams per ton or more, better than an ounce of gold equivalent.