Excellent post kherson, I think you may have answered my question. The rise in the price of gold from the beginning of to 2010 til the end of 2010, enabled Barrick to add lower grades in their resource estimate. All gold miners could do this and it would be shown as an increase in reserves.
cut-off grade Lowest grade or assay value of ore in a deposit that will recover mining costs; the cut-off grade determines the workable tonnage of an ore.
For example; 2009 cut off grade for gold may have been around .5 g/t. 2010 cut off grade for gold ON THE SAME DEPOSIT may now be .2 g/t.
So, it appears that this pretty well explains my question, "where did all this replaced gold come from"
Thanks for your work in searching this out Kherson. I wasn,t feeling well and didnt want to do the searching, so this is greatly appreciated by me.