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open pit mining methods

Open-pit miningis the most commonmethodused throughout the world for mineralminingand does not require extractivemethodsor tunnels. This surfaceminingtechnique is used when mineral or ore deposits are found relatively close to the surface of the earth.Open-pitsare sometimes called ‘quarries’ when they produce building materials and dimension stone. Benefits ofopen-pit mininginclude: Ease …

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