The world's biggest gold mines: Top ten - .
Ore production at the GBC underground mine started in the third quarter of 2019. Ongoing expansions at the mine are expected to ramp up the production to 240,000t per day by 2022. The mine produced 2.69 million ounces (Moz) of gold in 2018, milling 178,100t of ore a day. 3. Olimpiada gold mine – 26Moz