Ore from Peak, Perseverance and New Occidental is crushed underground and hoisted to a surface stockpile and ultimately to the SAG mill feed conveyor. Ore from New Cobar and Chesney is hauled to Peak where it is fed onto the SAG mill feed conveyor via a separate bin.
Gold and silver are recovered in a gravity circuit with Knelson concentrators, further concentrated in an intensive leach reactor, electrowon and sludge smelted in a gas-fired furnace to produce gold dore bars. Gold, silver and copper are also recovered as a copper concentrate in a conventional flotation circuit. The flotation concentrate is thickened, dewatered and stockpiled prior to transporting to the smelter. A third method of gold and silver recovery is by cyanidation in a tank leach circuit. The resulting sludge is smelted into gold dore bars. Metal recoveries are approximately 90% and 87% for gold and copper respectively.