Mining - Wikipedia, the free encyclopedia. Mining is the extraction of valuable minerals or other geological materials from the earth from an orebody, lode, vein ...

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iron processing Britannica. Use of a smelting process to turn the ore into a form from which products can be fashioned. Included in this article also is a ...

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The Knowledge Bank at The Ohio State University Ohio Mining . Ohio Mining Journal. Title: The Difference between Mining Coal and Iron Ore. Creators: Schmidt, P. F..