Tunnelling - Engineering

Q1:

In the given figure drill holes, heading, mucking and benching are mumbered 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

ANS:C - 4 1 3 2

No answer description is available.