This series of experiments demonstrates that poly-1 can be added to a leach solution to bind gold, and then used again in other leach solutions until all binding sites are consumed. This protocol minimizes the amount of sorbent required, with 6.50 grams of gold bound by 100 g of poly-1 in this process. Gold leaching and recovery from ore concentrates. A final demonstration of the integrated gold leaching and recovery method was carried out on ore concentrates (Fig. and Fig. ). Ore was obtained from a fluvioglacial quaternary deposit in the Andes mountains. The ore was alluvial in nature and composed primarily of siliceous rock. The crushed ore ranged from micrometers to 3 cm in size. A sample was sieved to collect fractions < 1 mm for this experiment, which concentrated the fine, gold-rich particles. Fire assay on this fraction indicated a gold concentration of approximately 700 ppm, while the fraction of larger particle sizes contained < 1 ppm gold. The TCCA leaching method was applied to these ore concentrates followed by gold sorption with either poly-1 or poly-2, so both sorbents could be tested in this process.