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    Mining is the extraction of valuable minerals or other geological materials from the earth from an orebody, lode, vein, seam, reef or placer deposits. These deposits form a mineralized package that is of economic interest to the miner. Ores recovered by mining include metals, coal, oil shale, gemstones, . The gold mines of Nubia were among the largest and most extensive of any.

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    Feb 4, 2015 . Cash cost is the cost to mine gold bearing rocks, process the ore, and sell the gold. It factors in basic mining, processing, transport and refining.

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  • The Real Cost of Mining Gold . Kitco Commentary

    Feb 4, 2015 . Cash cost is the cost to mine gold bearing rocks, process the ore, and sell the gold. It factors in basic mining, processing, transport and refining.

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  • Our Service

    What you need is what we can do! In the future, Xinhai will continue to rely on three big supporting "technology, talents, management", adhere to the international development strategy, and concentrate on providing customers with modern, efficient, energy-saving mine overall construction and operational solution, to create international leading enterprises in mining industry.