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A number of metals, including Gold, are formed deep within the Earth. They only get anywhere near the surface were we can find them during a volcanic eruption.

The first Gold miners were able to wash the gold nuggets out of river water when it was being washed downstream in the river.

These days open cut mines a kilometre or more across are used to mine gold near the surface. Deep or underground mines which can extend 20 or 30 kilometres underground are being used as the easiest gold has already been dug out.

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14y ago

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