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Mining Engineering · Q874

Drilling and Blasting

Engineering and GATE · Mining Engineering · question 874

Q874

Air samples from behind stopping should be between the hours . . . . . . . .

A.
9 - 12 AM
B.
12 - 2 PM
Answer
C.
1 - 3 PM
D.
3 - 4 PM

Answer: Option B

Solution

Answer: Option B
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