This is an aerial view of Macraes Gold Mine, east Otago. Although the original gold workings at Macraes were underground, all recent mining has been opencast. The gold originates in a gently sloping mineralised zone, about 150 metres thick. The ore is dug out of the opencast pits, crushed and treated to remove the impurities and concentrate the gold. A total of 5.7 tonnes of gold were produced in 2004.
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