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Higginsville Mill

Gold Processing

Gold mineralization is processed the Higginsville Gold Mill is sourced from the Beta Hunt Mine and mines at Higginsville. The Higginsville Mill flowsheet (shown below) is a conventional CIP gold circuit with quaternary crushing and ball milling with a gravity recovery circuit on the cyclone underflow. Grinding is followed by leaching with a production capacity of 1.6 Mtpa.

The gravity recoverable gold from the mineralization, which is recovered through a Knelson concentrator and Acacia high intensity leach reactor is treated separately to produce bullion. The mill cyclone overflow product flows to a leach circuit. The pregnant solution reports to carbon adsorption tanks followed by an acid wash and elution before the electrowinning circuit produces a calcine for smelting.

There are several approved tailings storage facilities on site, with deposition to open pits located on site. There is also a four paddock tailings storage facility that could be used in the future if required with additional dam lifts or expansions.

> Figure 1

Higginsville Gold Mill Flowsheet

Technical Reports

Technical Report Western Australia Operations - Eastern Goldfields: Beta Hunt Mine and Higginsville Gold Operations