The GATE Grind

GATE 2022 MN – Question 36

Mining Geology, Mine Development and Surveying · Mine Development · 2 marks · Multiple choice

Match drilling patterns P–S shown with operations I drifting, II shaft sinking, III sublevel stoping and IV drop raising.

Diagram for GATE 2022 MN question 36
  1. P–II; Q–III; R–I; S–II
  2. P–III; Q–IV; R–I; S–II
  3. P–II; Q–I; R–IV; S–III
  4. P–III; Q–IV; R–II; S–I

Practise this question in The GATE Grind →

Show answer and explanation

Correct answer: (D) P–III; Q–IV; R–II; S–I

Explanation

P shows a fan/ring of long holes for sublevel stoping. Q shows staged charges in parallel holes used for drop raising. R is the circular shaft-bottom drilling pattern, and S is the arched heading face used in drifting. These identify P–III, Q–IV, R–II, S–I, D.

More Mine Development questions

All Mine Development questions →