Prominent Hill is a copper, gold and silver mine located 650 km northwest of Adelaide in South Australia and comprise:
-Open pit mine (Malu) - which concluded operations in Q1 2018;
-Surface ore stockpiles - being in operation since Q2 2018;
-Underground mine (Ankata and Malu mine areas);
-Conventional crushing, grinding and flotation Processing Plant.
Surface operations to rehandle stockpiles are carried out by mining contractor.
The Prominent Hill Underground Mineral Resource is being mined successfully using sub-level open stoping (SLOS) with cemented fill. Access to the ore body and ore haulage is carried out via decline (ramp) system. Operations are performed by mining contractor.
On August 18, 2021, The OZ Minerals Board approved construction of a hoisting shaft at the Prominent Hill copper-gold mine in South Australia, paving the way for a mine life extension and throughput expansion.
Sinking of the shaft is expected to commence in the March quarter of 2022. Mining and installation of underground and surface infrastructure is scheduled for completion along with commissioning of the Wira shaft at the end of 2024, with nameplate capacity expected in H1 2025.
The shaft design comprises a 1,329 metre deep, concrete lined shaft with a diameter of 7.5 metres.
The company plans to reduce its underground loading fleet to eight vehicles, from nine after the shaft expansion, with its trucking ........
