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what is cut off grade in mining

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    The cut-off grade is the grade of material below which mining is uneconomic. Calculating the cut-off grade involves completing a mini-feasibility study in which all the known and potential costs of the project are accounted for.

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  • DETERMINATION OF A MINING CUTOFF GRADE STRATEGY BASED

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  • Mining Valuation Lesson: Cut-Off Grade Theory And

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  • Mine cutoff grade Britannica.com

    In mining: Delineation ore. This is called the mine cutoff grade. And, if the material has already been mined, there is a certain grade below which it is not ...

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    Sep 05, 2006· A cut-off grade for gold might be 0.13 oz/ton, depending upon the price of gold at the time. "copper equivalent" is a value given to an ore that consists of copper

    Status: Resolved
  • Mining Valuation Lesson: Cut-Off Grade Theory and

    A mining valuation lesson on cut-off grade theory and practice. Applying the theory of cut-off grade to a gold mine to see how it affects mine life and more

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  • Cut-off Grades for Mineral Resource Reporting Micon ...

    That cut-off will be whatever grade is needed to recover enough metal or mineral to pay the cash costs of production. These costs typically comprise mining (stoping and stope development), hoisting/hauling, processing, royalties and

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  • Cut-Off Grades For Mineral Resource Reporting SRK

    A cut-off grade (COG) is an industry-accepted standard expression used to determine what part of a mineral deposit to include in a mineral resource estimate (MRE). For MRE reporting, COGs tend to be rounded down to ensure that material of no economic significance is excluded from the resource.

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  • Cut-off grade determination for the maximum value

    mine with an average grade of 6 g/t Au and a logrithmic variance of 1.2 are applied to the model to illustrate the benefits of representing cut-off grades in terms of present value curves for different segments of a mining operation. Keywords: cut-off grade, Net Present Value, grade-tonnage curve, balancing cut-off grade, mining, processing,

  • Cut-off grade estimation QueensMineDesignWiki

    The distinction between ore and waste cannot be made without a cut-off grade. Cut-Off grade is the minimum grade required in order for a mineral or metal to be economically mined (or processed). Material found to be above this grade is considered to be ore, while material below this grade is considered to be waste.

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  • CutOff Grade and Mine Optimisation Theory Questions

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  • Cutoff grade Wikipedia

    The initial mine cut-off grade is estimated or chosen during a mining feasibility study, but is subject to change due to greater knowledge obtain about the deposit or changes in market conditions. This article about mining is a stub.

  • Mining Valuation Lesson: Cut-Off Grade Theory and

    Looking at the table, you can see that as the cut-off grade increases, so does the NPV. This is due to the greater benefit of a higher annual cash flow from the ...

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    The Athabasca Basin in Northern Saskatchewan hosts the world's largest and highest grade uranium deposits accounting for 1/3 of the global uranium supply, a figure ...

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