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Mining Engineering · Q419

Drilling and Blasting

Engineering and GATE · Mining Engineering · question 419

Q419

Taking the air to the lower point of the district and allow to travel to higher levels to ventilate the district or faces before goes to return . . . . . . . .

A.
Ascensional
Answer
B.
Disacensional
C.
Antitropal
D.
Homotropal

Answer: Option A

Solution

Answer: Option A
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