Mining Operations OceanaGold Haile Gold Mine
Once we reach the ore, it takes 20 tons of rock to produce one ounce of gold. Yes, 20 tons. Gold Processing Associated Facilities. The gold bearing ore from the mine pits is processed by crushing, grinding, concentrating, and recovering the gold and then smelting it into doré bars. These bars are a semipure alloy of gold, usually about 90% ...