Question

How many types of underground coal mines method used?

Answer 1

Answer: The world's deepest mine is the Mponeng gold mine in South Africa, which extends to a depth of almost 2½ miles below the Earth's surface. ...  TYPES OF MINING ARE:----

1.Room and Pillar Mining.

2.Cut and Fill Mining.

3.Sub-level Open Stopping.

4.Shrinkage Stoping.

5.Long-wall Mining.

6.Block Caving.

7.Sub-level Caving

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Explanation: