Gold mining WikipediaGold mining is the resource extraction of gold by mining. As of 2016, the world's largest gold producer was China with 463.7 tonnes. The second-largest producer ...Gold Ele

mining and extraction of bauxite and materials.Bauxite mining Norsk Hydro 21 Jan 2013 ... Bauxite mining is the first step in aluminium production. ... Aluminium production starts with the raw

Mining WikipediaMining is the extraction of valuable minerals or other geological materials from the earth usually from an orebody, lode, vein, seam, reef or placer deposits.Science in Focus Ex

Copper extraction WikipediaCopper extraction refers to the methods used to obtaining copper from its ores. The conversion of copper consists of a series of chemical, physical, and ...Copper Min