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Open Pit/Underground Mining. Open pit development method is used where a deposit is shallow. Open pit mining method includes the use of bulldozers to strip and ...

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A s open pit mines deepen they often become burdened with excessive waste stripping needs. Transitioning to underground mining is sometimes considered a

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Surface mining - Wikipedia, the free encyclopedia. Surface mining, including strip mining, open-pit mining and mountaintop removal mining, is a broad category of ...

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