The process of extracting copper from copper ore varies according to the type of ore and the desired purity of the final product. Each process ...
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WhatsAppAluminium or aluminum (see below) is a chemical element with symbol Al and atomic number 13. It is a silverywhite, soft, nonmagnetic, ductile metal in the boron group.
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WhatsAppExtracting Gold Extracting gold is a term related to gold. Learn about extracting gold at HowStuffWorks.
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