Incorporating environmental issues into optimum cut-off grades modeling at porphyry copper deposits

M. Osanloo, F. Rashidinejad and B. Rezai

Resources Policy, 2008, vol. 33, issue 4, 222-229

Abstract: Cut-off grade is defined as the grade which discriminates between ore and waste within a given orebody. Determination of a complete optimum cut-off grade policy is a very important function during mine life. Using the modified optimum cut-off grade model presented in this paper not only the net present value of a porphyry copper mining project is maximized, but also the adverse environmental impacts of the project are minimized simultaneously. This methodology is more effective in long-range planning. For showing the effectiveness of the model, two scenarios are considered in a hypothetical deposit and the results show that incorporating the modified optimum cut-off grade policy, the net present value will be increased by 3.6% in comparison with the Base Case.

Keywords: Acid-generating; rocks; Cut-off; grade; policy; Mine; design; and; planning; Porphyry; coppers (search for similar items in EconPapers)
Date: 2008
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Citations: View citations in EconPapers (12)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:jrpoli:v:33:y:2008:i:4:p:222-229

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