सोने की खानों की अनूठी दुनिया | Gold Mines - The Gold Miners Mining and processing Gold ore

सोने की खानों की अनूठी दुनिया | Gold Mines - The amazing world of Gold Miners and Mining from Gold ore processing Placer mining is the technique by which gold that has accumulated in a placer deposit is extracted. Placer deposits are composed of relatively loose material that makes tunneling difficult, and so most means of extracting it involve the use of water or dredging. Methods * Placer mining * Panning * Sluicing * Dredging * Rocker box * Hard rock mining * By-product gold mining Placer mining is the technique by which gold that has accumulated in a placer deposit is extracted. Placer deposits are composed of relatively loose material that makes tunneling difficult, and so most means of extracting it involve the use of water or dredging. Gold ore processing * Cyanide process * Mercury process