Q86
The size of galleries required for employing model 625 Auger drill . . . . . . . .
A.
4.2 m × 2.6 m
B.
4.5 m × 2.6 m
AnswerC.
4.8 m × 3 m
D.
2.4 m × 2.8 m
Answer: Option B
Solution
Answer: Option B
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