Engineering - Tunnel Engineering - Discussion

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Q.

In compressed air tunneling, the volume of free air provided is                         
A. 6 mJ per second per m2 of face area B. 6 m3 per minute per m2 of face area
C. 20 m3 per minute per m2 of face area D. 6 m3 per hour per m2 of face area

Answer: Option B
Explaination:

 


No Explanation




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