Tunnel Engineering

In the given figure drill holes, heading, mucking and benching are numbered as 1, 2, 3, 4; The correct sequence is:

  • A. 4, 1, 2, 3
  • B. 1, 2, 3, 4
  • C. 4, 1, 3, 2
  • D. 3, 4, 1, 3
Answer: Option C.
Explanation: 

No answer description available for this question.

Leave a Reply

Your email address will not be published.

Back to top button
error: Alert: Content is protected !!