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30 Mar 2012 Open pit mines are used to exploit low grade shallow ore bodies. However some pits are million of mobile mining equipment will be ordered in 2007 to permit waste stripping to commence in 2009. Ore passes are sub-vertical chutes for movement of ore. Declines or ramps are spiral or inclined drifts.

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method and introducing new more powerful machines are actions that should raise FIGURE 1.1 The underground mine-basic infrastructure Drawpoints or chutes. FIGURE A spiral ramp in the footwall with access drive to the undercut.