Mining Engineering > GATE 2023 > Mine Economics
The average ore grade of a copper deposit is 0.9%. The recovery of the metal after processing, smelting and refining is 85%. If the selling price of refined copper is Rs 640/kg, the sale value in Rs. from mining one tonne of ore is [rounded off to 1 decimal place]

Correct : 5440.0

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ore grade copper deposit mining engineering GATE 2023 copper refining recovery mining engineering questions ore grade calculation mining engineering exam copper refining value mining engineering exam questions

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