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Write in 200 words:

Describe the types of mining.

Answer :

Mining is the extraction of minerals and other materials from the interior of the earth.

• It has immense importance in today’s world as the household or industries depend on the minerals available on the planet.

• There are various types of mining: Surface mining (for minerals found close to the surface of the earth). It can be further divided into three types: open cast, strip, alluvial.

Open cast: Digging of the materials found at the surface of the earth.

Strip: Involves removing of long strips of soil and rock and other weathered material.

Alluvial: Extraction of minerals by dredging from the beds of rivers. (Tin and gold).

Quarrying: It is another type of mining used for extracting building materials like Limestone.

Underground (Sub surface) mining: Ores are extracted from greater depths beneath the surface of the earth. This kind of mining is expensive as well as risky. Ex. Coal

Drilling: It is the extraction of oil and petroleum.

There are other types of mining like contour mining, highwall mining, etc.

There are some side effects of mining like soil erosion, water erosion, and air pollution. So mining areas after work must not be left abandoned.

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