2006 Herald Resources Inc. (Herald Resources) to raise $ 90 million, as well as with the general Australian community Margin debt of $ 62 million, invested $ 140 million to develop the mine. ~ Planned in late 2007 production is expected production capacity: 120,000 tons of zinc concentrate / year, lead concentrate 65,000 tons / year. The mine is mined by underground tunnels and floated by flotation . The ore reserves/resources amounted to 16.8 million tons, and the average grades were 11.51% for zinc, 6.71% for lead, and 8.16 g/ton for silver . Pioneer Resources has an 80% stake and Aneka Tambang has a 20% stake. (Source: Resource Network)