Describe the steps involved in the …

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Describe the steps involved in the process of extraction of a metal

Posted by Rohit Chattopadhyay 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Sia ? 6 years, 7 months ago

Minerals are mainly extracted by mining, drilling or quarrying.
Mining: The process of taking out minerals from rocks buried under the earth’s surface is called mining. Mining are of two types:

Opencast mining: Open cast mining refers to the method of extraction in which minerals lying at shallow depths are taken out by removing the surface layer.
Shaft mining: Shaft mining refers to the method of extraction in which deep bores called shafts, have to be made to reach mineral deposits that lie at great depths.

Drilling: Deep wells are bored to take minerals out, is called drilling.
Quarrying: In the process of quarrying, minerals that lie near the surface are simply dug out.

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CBSE > Class 08 > Science