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The feasibility study of an opencast mine revealed the following Recoverable...

This question belongs to Mining Engineering Introduction To Mining Engineering
Introduction to Mining Engineering
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The feasibility study of an opencast mine revealed the following:
Recoverable value per tonne of ore = Rs. 900
Production cost per tonne of ore = Rs. 550
Stripping cost per tonne of waste = Rs. 45
The break even stripping ratio will be

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Correct Answer: Option A
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