Economic aspects of pad construction costs on heap leach projects |
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| Authors: | D Van Zyl M Henderson B Cobb |
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| Institution: | (1) EIC Corporation, 1355 South Colorado Blvd., Suite 316, 80222 Denver, Colorado, USA;(2) Welsh Engineering, Inc., 5400 Equity Avenue, 89502 Reno, Nevada, USA;(3) CH2M Hill, 2020 SW Fourth Avenue, 2nd Floor, 97201 Portland, Oregon, USA |
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| Abstract: | Summary Pad construction costs can affect the overall economics of heap leach projects. Costs for single- and double-lined pads, using various designs, are listed for a typical small and large project. Double-lined pads are now frequently required by regulatory agencies. Unless such designs significantly reduce the risk of site-specific contamination, the extra costs cannot be justified from an economical viewpoint. Specific attention is given to the short project life (typically five years) of heap leach projects. A few numerical examples are presented to demonstrate the overall impact of these costs on economic parameters. |
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| Keywords: | Heap leaching pad construction economics |
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