Question

Which of the following statements are correct related to underground mining method? Choose the correct option:
i. It is used when the ore lies deep below the surface.
ii. It is the easiest and cheapest mining method.
iii. It requires specially designed lift and drills.
iv. It is also known as shaft method.

• A. Only i, ii and iii are correct.
• B. Only ii, iii and iv are correct.
• C. Only i, iii and iv are correct.
• D. Only i, ii and iv are correct.

Hint:

When learning about mining methods, focus on the depth and location of the ore, as well as the type of equipment used. Shaft mining requires deep excavation and specialized tools, making it more expensive.

Answer 1

The Correct Option is C

Underground mining is used when the ore lies deep below the surface (i). This method involves specialized equipment such as lifts and drills (iii). It is also known as the shaft method (iv), where a shaft is dug vertically to reach the ore. However, it is not the easiest or cheapest method (ii), as it is more costly and complex compared to surface mining.