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Bench height - 12 m burden - 4 m spacing -...

This question belongs to Mining Engineering Opencast Mining
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Bench height - 12 m, burden - 4 m, spacing - 5 m, explosive per hole - 120 kg, density of rock - 2600 kg/m2 is the power factor in tonne/kg is . . . . . . . .

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Correct Answer: Option C
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