With state of the art cyanidation 1 g/t is enough to be extracted with profit. I show you how it works: First step: 2Au + H2O + 1/2O2 + 4KCN ----> 2K[Au(CN)2] + 2KOH Second step: 2K[Au(CN)2] + ZN ----> K2[Zn(CN)4] + 2Au and ready is our gold! Very simple chemical process, but you have to take care about environmental pollution. BTW: We have 55% FE in the tailings. With magnetic seperation of FE we could concentrate AU up to 2.2 g/t - realistic should be 1.4g/t to 1.8 g/t. Could be done! It depends on AURC to do it!!