In summary, ore will be extracted from the underground workings using a range of mining methods in three phases as follows
- Phase 1: Remediation and Restoration
Preparation of the Mine Site for recommencement of mining operations;
- Phase 2: North Mine Uppers
Extraction of ore using Long Hole Open Stope mining methods;
- Phase 3: North Mine Deeps
Extraction of ore using Long Open Stope, Overhand Cut and Fill and Underhand Cut and Fill mining methods.
Activities that are undertaken at the South Mine include the following:
- extraction of ore using underground mining methods. Ore and waste rock are removed from the mine using both shaft haulage and via decline. The mining is expected to be completed in 2030;
- crushing and screening of ore and stockpiling on a crushed ore stockpile;
The Rasp Mine is operated by CBH Resources Ltd. Operation of underground mine to extract ore at a maximum rate of 750,000 tpa, with mining expected to continue until 31 December 2026.
Mining ore from the Potosi mine is expected to be completed in 2021.
Mining activities at the North Mine:
- underground diamond drilling rigs targeting the upper section of mine area for exploration and blasting activities;
- transportation of ore and mullock to the surface using portal and decline via underground haul trucks;
- mullock placement occurred within existing Cosmopolitan open cut;
- extracted ore transp ........