SRK has been working with mining companies to assess the potential to upgrade or pre-concentrate feed ahead of the process plant. This can be done through a combination of screening, bulk sorting and particle sorting. At the Kinross Tasiast operation in Mauritania, SRK conducted bulk screening trials to determine the upgrade potential of low to medium-grade stockpiles. The fine fraction would be sent to the plant while the coarse fraction could be heap leached. In addition, SRK has developed lab protocols on drillcore samples to estimate where the valuable metal will report to: coarse, medium or fine fractions.
