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Types of Australian mine: Open Pit or Underground Mine ... Types of Australian mine: Open Pit or Underground? Australian mines can be classified into two main categories: Open Pit mines and Underground mines. An Economic History of Australia - Project . An Economic History of Australia by Edward Shann Gold mining - Wikipedia Gold mining is the resource extraction of gold by mining. As of 2016, the world's largest gold producer was China with 463.7 tonnes. The second-largest producer ...    Read More