Question

Which type of mine involves digging tunnels and shafts deep underground?

Question 19 options:


1)


strip mine


2)


openpit mine


3)


subsurface mine


4)


smelting

Answer 1

3. surface mine is right.

Answer 2

The correct choice is

3) subsurface mine

This kind of mining is used to obtain ores close to the surface of earth. the process involves digging tunnels several feet inside the earth upto the location where he resources are located. it creates very small disturbance to the environment and surface. it produces less waste while mining.it is cheaper also . it involves great risk