The pressure on diamonds is between during drilling
A. 0.6 - 1.2 Kgf/cm2
B. 1.5 - 2 Kgf/cm2
C. 2.5 - 3.8 Kgf/cm2
D. 3.8 - 6 Kgf/cm2
Answer: Option B
This Question Belongs to Mining Engineering >> Coal Mining
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