Question

What is open-cast mining?​

Answer 1

Answer:

Open-pit mining, also known as opencast mining, is a surface mining technique that extracts minerals from an open pit in the ground. ... This surface mining technique is used when mineral or ore deposits are found relatively close to the surface of the earth..

Answer 2

Answer:

Open cast mining is also called open pit mining is a surface mining technique that extract minerals from an open pit in the ground.......the surface mining technique is used when mineral or ore deposits are found relativly close to the surface oftheearth

Explanation:

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