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Conference Proceedings

1990 AusIMM New Zealand Branch Annual Conference - The Mineral Industry in New Zealand

Conference Proceedings

1990 AusIMM New Zealand Branch Annual Conference - The Mineral Industry in New Zealand

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Grey River Gold Dredge Project

Grey River Gold Mining Ltd commenced dredging alluvial flats in the Grey River Valley in 1989._x000D_
Previous drilling indicated over 100 million cubic metres of gravels with some 90 per cent of the gold in the bottom seven metres._x000D_
The dredge built by Rahco, Spokane, was innovative in a number of aspects but particularly in the fact that a separate ladder with a cutter and pump was used to strip the overburden and a bucketline to mine the gold bearing wash below._x000D_
Metallurgical studies and exploration were initiated when the project commenced. Leasing and environmental considerations were investigated and action taken._x000D_
While progress is being made, the operation at this stage is not meeting required production and performance. Main problems have been with the stripping system and wear.
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  • Published: 1990
  • Unique ID: P199002012NZ

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