Gwalia Deeps is an underground and open-pit mine, owned and operated by St Barbara Ltd. Gwalia Deeps is located in the Leonora Region of Western Australia, approximately 240 kilometers north of Kalgoorlie.
The processing plant is a conventional carbon-in-pulp (CIP) circuit and has a nominal capacity of 1.2 million tonnes per year of hard rock and up to 1.8 million tonnes per year, when softer material is blended. Other surface infrastructure includes a gas-fired power station, a paste-fill plant, and a refrigeration plant to cool the underground environment. Central to the mine ventilation system is a 5.5 meter ventilation shaft, which at 800 meters long is the largest raise bored shaft ever drilled in Australia.
Royal Gold owns a 1.5% net smelter return (NSR) royalty on gold produced from the Gwalia Deeps mine.
On February 22, 2010, Royal Gold announced it closed its acquisition of International Royalty Corporation, which included the 1.5% NSR royalty on Gwalia Deeps.
*Detailed information on our interest can be found on the Portfolio Asset Summary table