The mill was a conventional leach-CIP circuit. The ore was crushed to 3/8" with standard- and short-head cone crushers. The crushed material was fed to one of two grinding circuits (A-circuit = 3 ball mills, B-circuit = single ball mill). A-circuit was one of the first in the world to include the fully automated Knelson (gravity) concentrator. A second unit was added to the B-Circuit around the year 2000. Concentrate from the Knelsons was upgraded with a shaking table. That unit was replaced with the first Acacia concentrator installed in North America.