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Lead WikipediaLead is a chemical element with symbol Pb (from the Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials.Introduction to Mineral Proc

Copper WikipediaCopper is a chemical element with symbol Cu (from Latin: cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and ...Ore genesis Wikip

Xstrata WikipediaXstrata plc was an Anglo-Swiss multinational mining company headquartered in Zug, Switzerland and with its registered office in London, United Kingdom. It was a major ...Bingha