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OZ Minerals Ltd.
Summary
| Project: | Carrapateena | |
|---|---|---|
| Deposit: | Carrapateena | |
| Location: | Australia | |
| Commodities: | Copper-Gold-Silver | |
| Date: | 6/23/2020 | |
| Report Code: | JORC | |
| Report Type: | Resource Estimation | |
| Project Stage: | Pursuing Resource Increase/Upgrade | |
| Report details: | 23-6-2020: OZ Minerals Ltd. announces a Resource Estimation report for its Carrapateena deposit at the Carrapateena project. Updated Reserve Estimate for Project. Previous studies have concluded that both block caving and sub level caving are appropriate | |
| Resources: | (Reserves, Prob.): 220Mt @ 1.1% Cu, 0.44g/t Au, 4.5g/t Ag | |
| CP/QP: | [Reserve] Rodney Hocking (Internal) | |
| ABSTRACT: | Previous studies have concluded that both block caving and sub level caving are appropriate methods to mine the Carrapateena Ore Reserve. In 2017, the Feasibility Study Update recommended a top-down sub-level cave (SLC) mining method as the best option for the deposit and based on that study a decision was made to mine the deposit. As of April 2020, the SLC has commenced production in the uppermost level of the mine. In 2020, a pre-feasibility study was completed on an expansion of the Carrapateena asset (the “2020 PFS”). This Study identified an alternate for mining the deposit was by block cave mining method, a summary of which is included in this study. Two mining blocks were identified to be mined one after the other, being BC1 then BC2. This approach maximises Net Present Value and the Present Value Ratio (Net Present Value divided by Discounted Capital Cost) of the deposit. In addition to the existing mill already constructed for the SLC mining method, an additional mill needs to be constructed to increase the processing throughput rate to 12 Mtpa. Provision has been made in the study for Capital Cost estimation | |
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