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Mining Engineering · Q290

Introduction to Mining Engineering

Engineering and GATE · Mining Engineering · question 290

Q290

Given bench height: 12 m, burden: 4 m, Spacing: 5 m; explosive per hole: 120 kg; density of rock: 2600 kg/m3, the powder factor in tonne/kg is

A.
2.0
B.
4.6
C.
5.2
Answer
D.
7.3

Answer: Option C

Solution

Answer: Option C
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