Question
Describe the methods for extracting minerals.
Solution
The methods for extracting minerals are described below:
(i)Open cast mining: In this method minerals lying at shallow depths are taken out by removing the surface layer.
(ii)Shaft mining: In it deep bores (called shafts) are made to reach mineral deposits lying at large depths.
(iii)Drilling: Here deep wells are bored to take out minerals.
(iv)Quarrying: It is the process of extraction in which minerals lying very close to the surface are extracted just by digging them out.
