The $8 billion Waihi North mine has been given the approval to go for gold, and there could be many millions of ounces out of it.
It's been given the green light through the Government's fast track programme.
The permit secures 350 existing jobs and creates more than 100 new roles.
Oceana Gold Chief Executive Gerard Bond told Heather du Plessis Allan they're investing one billion dollars of capital to get things going.
He says that will be put towards a tunnel to go under the forest park and hundreds of millions will be spent during its operation at well.
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The Mike Hosking Breakfast