The Spence project, in the Antofagasta province in the north of Chile commenced operation in 2006. Spence is an open pit, heap leach, solvent extraction and electro-winning project, with a capacity of 200,000 tonnes of copper cathodes a year. The Metallurgy department acquired a Maptek I-Site 8800 laser scanner in late 2010 for various applications. One of the critical tasks is to manage reclamation of the leaching pads. The control method i

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