What are the main methods of mining? Explain.

1.	What are the main methods of mining? Explain.
Answer» Methods of mining: 1. Mining: (a) Open cast Mining and (b) Shaft mining. When the minerals are found close to the earth’s surface, they are extracted by removing only the upper layer. This is called open cast mining. In case the minerals are lying deep in the earth’s surface they are extracting by digging pits, it is known as the shaft mining. 2. Drilling: Some of the minerals lie very deep in the earth’s surface such as petrol and Natural gas. They are extracted by a process under which deep wells are bored to take the minerals out. This processes is called drilling. 3. Quarrying: Some minerals are found lying near the surface. They are simply dug out by digging. This process is known as quarrying.

Answer»

Methods of mining:

1. Mining:

(a) Open cast Mining and

(b) Shaft mining.

When the minerals are found close to the earth’s surface, they are extracted by removing only the upper layer. This is called open cast mining. In case the minerals are lying deep in the earth’s surface they are extracting by digging pits, it is known as the shaft mining.

2. Drilling: Some of the minerals lie very deep in the earth’s surface such as petrol and Natural gas. They are extracted by a process under which deep wells are bored to take the minerals out. This processes is called drilling.

3. Quarrying: Some minerals are found lying near the surface. They are simply dug out by digging. This process is known as quarrying.

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