Open pit Gold Mine, ColoradoNovember 12, 2017/in Resources/by Marli Miller mining, metals, resources https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png 0 0 Marli Miller https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png Marli Miller2017-11-12 11:03:572018-01-18 14:51:16Open pit Gold Mine, Colorado
