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 . . . . . . . .
A. 2
B. 4.6
C. 5.2
D. 7.3
Answer: Option C
This Question Belongs to Mining Engineering >> Opencast Mining
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