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Cut off mine in mineral processing

plant for further processing Optimizing mine cutoff grades means to maximize the net present value NPV of mining projects Cutoff grade directly affects the cash flows of a mining operation based on the fact that higher cutoff grades lead to higher grades per ton of ore hence higher revenues are realized depending upon the grade

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    he Mineral Resource is classified into the Inferred category as shown in Table 1 above The cutoff grade calculation was based on the following assumptions EMM price of USD2500t FOB mining cost of USD35t processing cost of USD75t GA cost of USD20t transport cost of USD50t EMM metallurgical recovery of 60 of the contained

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    Cutoff grade policy The effect of sequence and scheduling in both open pit and underground mine environments will be analyzed This will be followed by an indepth investigation into cutoff policy A number of practical worked examples will be discussed to illustrate the impacts of these two levers

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