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| Index > Projects > Tampakan > Mining |
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Four mining options were evaluated as part of the Scoping Study with annual throughputs varying from 10 to 20Mtpa:
- A block cave mining operation.
- A block cave mine with a small open pit and blending of ore feed processed to produce one copper flotation concentrate.
- A block cave mine with a modest-sized open pit mine with ore feed processed separately and the two copper concentrates blended to produce an acceptable product.
- A large open pit with blended ore feed to produce one copper flotation concentrate.
Gemcom Software International Inc ("GEMCOM") completed a conceptual block cave design and scheduling model using their own PC-BC software with some input from a Philippine-based consultant mining engineer with considerable experience in such operations. The conceptual design and scheduling for a large open pit was undertaken by Australian Mine Design and Development Pty Ltd ("AMDAD") using Whittle software. Both these studies were used by H&S in its resource report.
 SRK Consulting Pty Ltd (" SRK "), with the assistance of Xstrata Queensland Limited, completed a Desktop Study on the geotechnical aspects of mining the deposit for both the underground block caving and open pit. The SRK report did not foresee any major geotechnical is sue s with an open pit.
Preliminary "order-of-magnitude" financial modeling of the options indicates that the largest open pit (20Mtpa) with certain assumptions in respect of the marketability provided the most viable economic outcome. Notwithstanding this, consultants have been retained to assess the viability of a large scale underground block cave mining operation for the global resource. This study will enable a final decision to be made on the type (s) of mining method that will be considered within the Pre-Feasibility/Bankable Feasibility Studies. |
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