Question

Define open cast mining

Answer 1

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➡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.

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Answer 2

Open-pit mining, also known as open-cast or open cut mining, is a surface mining technique of extracting rock or minerals from the earth by their removal from an open-air pit, sometimes known as a borrow. 

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