The depth to which the reefs are mineralised is a notable feature of this field. Access to the orebodies is either via haulage shafts from the plateau or from a series of adits driven from the side of the gorge and linked by haulage roads. The reef systems are essentially planar in nature and steeply dipping. The host rock is either granite or hard slate. Level development is on lode, 2.4m by 2.4m in size and driven using tracked equipment, battery electric locomotives and air powered rocker shovels.
Production is by shrinkage and gallery stoping, using timbered side loading chutes.
Antimony flotation , producing concentrates for export and some gold recovered by thiourea leaching. Arsenopyrite flotation , with Pressure Oxidation of the concentrate for subsequent CIP recovery. Hillgrove Gold has installed Australia's first Pressure Oxidation autoclave for gold recovery. Engineering design for this plant has been performed by Lycopodium Engineers of Perth, Western Australia. As a second expansion stage, a pilot plant has been constructed for the production of high grade antimony trioxide from concentrates.