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Underground mining is our future We have said from the start that any gold mining we undertake on the Coromandel will be by underground. We are targetting high grade deposits that are economic to mine by underground methods like those we currently use at Favona just outside Waihi. Haven't heard of Favona? That's probably because all the tourists go to see the Martha open pit gold mine, and at Favona there's not much to see. An underground mine needs an area about the size of five football fields. In that area there would be a portal, a stockpile, and facilities for staff and machinery. There may need to be a water treatment facility too. And that's pretty much it. If we found an economic deposit within 100 kilometres of Waihi we would truck the ore back to process it, or perhaps pipe it back. We won't know unti we find an economic deposit and assess its geology. |
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Left: The portal and stockpile area at Newmont Waihi Gold's Favona mine on the outskirts of Waihi. You can see this mine by taking the Black Hill walking track to the south of Waihi. Modern underground mines like Favona (far left) are 'tight filled' after the ore has been removed. Waste rock is returned underground to prevent the type of subsidence events that can sometimes occur above historic underground workings. |
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