Question

name the method of extracting minerals in which deep wells are dug to extract petroleum and natural gas.
a) quarrying
b) open cast mining
c) shaft mining
d) drilling
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Answer 1

Answer:

shaft mining.......

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Answer 2

Answer....

Petroleum and natural gas occur far below the earth's surface. Deep wells are bored to take them out, this is called drilling . Minerals that lie near the surface are simply dug out, by the process known as quarrying. Minerals occur in different types of rocks.