The capsule bolt should not be loaded for the first . . . . . . . . hour.
A. $$\frac{1}{4}$$ hour
B. $$\frac{1}{6}$$ hour
C. $$\frac{1}{2}$$ hour
D. $$\frac{1}{8}$$ hour
Answer: Option C
This Question Belongs to Mining Engineering >> Mine Supports And Strata Control
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