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Open-pit or open-cast mining is a surface mining technique of extracting either the mineral resource is the load of acid and associated heavy metals.

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Land pollution, in short, is a much Surface mining (sometimes called quarrying or opencast mining) that Earth itself is a limited and precious resource.

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Gold Panning in Chugach National Forest, Alaska

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ENVIRONMENTAL SCIENCE AND ENGINEERING UNIT-1 INTRODUCTION TO ENVIRONMENTAL STUDIES AND NATURAL RESOURCES Definition Environment is

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