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Impairment of Assets | 12 Months Ended
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Dec. 31, 2012
Impairment of Assets |
4. | IMPAIRMENT OF ASSETS
|  | Fiscal Year Ended December 31, |  |  | Six Months Ended December 31, |  |  | Fiscal Year Ended June 30, |
|  | 2012 |  |  | 2011 |  |  | 2010 |  |  | 2010 |
Materials contained on heap leach pad (1) |  |  | 19.2 |  |  |  | — |  |  |  | — |  |  |  | — |
Property, plant and equipment (2) |  |  | 14.5 |  |  |  | 9.5 |  |  |  | — |  |  |  | — |
Biox - property, plant and equipment (3) |  |  | 7.9 |  |  |  | — |  |  |  | — |  |  |  | — |
|  |  | 41.6 |  |  |  | 9.5 |  |  |  | — |  |  |  | — |
| (1) | The charge of $19.2 million relates to a write-down to market value in Australia due to the cessation of the heap leach at St. Ives.
| (2) | The impairment charge in fiscal 2012 consisted of a $10.1 million impairment of heap leach assets in Australia due to the cessation of the heap leach at St. Ives and $4.4 million impairment of heavy mining machinery in Ghana. The impairment charge in fiscal 2011 resulted from the decision to reassess the optimal processing methodology for the oxides at Cerro Corona, where the focus was on the evaluation of a heap leach operation to capture the value inherent in the oxide instead of a stand-alone oxide plant; the evaluation costs of which were written off in 2011.
| (3) | The Group impaired its patented technology, known as the Biox process, which is used for the pretreatment of refractory ores and concentrates prior to gold recovery through conventional cyanide leaching techniques. The Group entered into an agreement to sell its Biox technology in 2013.

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- Definition The entire disclosure for the details of the charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value. Disclosure may also include a description of the impaired asset and facts and circumstances leading to the impairment, amount of the impairment loss and where the loss is located in the income statement, method(s) for determining fair value, and the segment in which the impaired asset is reported. + References No definition available. + Details
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