For an open pit operation the value of metal is Rs. 210/kg, and recoverable grade is 1.2%. Production cost per tonne of ore inclusive of mining and processing but excluding stripping is Rs. 2000. If the break even stripping ratio is 3.49 m3/te. then the stripping cost is (lte = 1000 kg)
A. Rs. 149/m3
B. Rs. 140/m3
C. Rs. 72/m3
D. Rs. 60/m3
Answer: Option A
This Question Belongs to Mining Engineering >> Mine Economics
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