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Goodwill (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Changes in goodwill [abstract] |
Summary of key assumptions used for assessing the recoverable amount of goodwill |
| 2020 | 2019
Gold price ($/oz) | $1,850 - $1,550 | $1,400
Discount rate | 5% | 5%

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