Question

What is opencast mining?

Answer 1

Answer:

Opencast mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow.

Explanation:

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Answer 2

Open-pit mining

Explanation:

Opencast mining is also know as open-pit mining. It is the method of extracting minerals when they are found near the earth’s surface. The minerals are extracted through excavation or an open pit. There is no tunnelling involved in this method of mining. The minerals are dug up using earthmovers and excavators. Coal, gold, copper and nickel are some of the minerals extracted through this method.