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Open pit mining - also called open cut mining or open cast mining - is a surface mining technique used to extract rocks and minerals. It requires large-scale ...

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In each of these mining methods, ... Open pit mining is a technique used to extract copper ore near the earth's surface. Open pit mining is the most widely used ...

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What Is Open Cast Mining? - Ask - What's Your … Open cast mining refers to a method of extracting rock or minerals from the earth by their removal from an open pit ...

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What is an environmental problem that is caused by open cast mining of copper ore?

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Open-pit mining - Wikipedia, the free encyclopedia. Open-pit mining, open-cut mining or opencast mining is a surface mining …

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Part of an interactive on-line booklet about copper mining explaining the ... the Earth to an appropriate depth and driving horizontal tunnels into the ore. open pit: