Gold mining - WikipediaGold mining is the resource extraction of gold by mining. As of 2017, the world's largest gold . Despite the decreasing gold content of ores, the production is increasing. This can be achieved with industrial . The pond is excavated in the gravel bar and filled from the natural water table. "Pay" gravel is excavated from the.natural gold ore,Gold Prospecting | How to Find Gold in the United StatesLode gold: Gold ore from the Olinghouse epithermal deposit. ... A placer deposit is a concentration of a natural material that has accumulated in unconsolidated.
natural gold ore