This technical memorandum presents the results from the 43-week extended kinetic geochemical characterization program of scavenger tailings for the Resolution Copper Project conducted by Golder Associates (Golder). The program was carried out to evaluate the environmental stability of the tailings and supplement the static testing program reported in Golder 2007. It was extended from its original 20-week duration in accordance with the recommendations provided in the 20-week kinetic testing report (Golder 2008) due to unresolved uncertainty with regard to acid generation potential.