| 17,151 | 18,844 | Cash operating costs (1) | 2,277 | 2,081 |
| (480) | (772) | By-products (note 3) | (94) | (58) |
| 16,671 | 18,072 | | 2,183 | 2,023 |
| 634 | 699 | Royalties | 84 | 78 |
| 100 | 134 | Other cash costs | 16 | 12 |
| 17,405 | 18,905 | Total cash costs | 2,283 | 2,113 |
| 72 | 110 | Retrenchment costs (note 10) | 14 | 9 |
| 218 | 182 | Rehabilitation and other non-cash costs | 22 | 28 |
| 17,695 | 19,197 | Production costs | 2,319 | 2,150 |
| 4,620 | 4,615 | Amortisation of tangible assets (notes 9, 16 and 33) | 555 | 560 |
| 21 | 18 | Amortisation of intangible assets (notes 17 and 33) | 2 | 2 |
| 22,336 | 23,830 | Total production costs | 2,876 | 2,712 |
| 222 | (610) | Inventory change | (63) | 16 |
| 22,558 | 23,220 | | 2,813 | 2,728 |
| | | (1) | Cash operating costs comprises: | | |
| 5,902 | 6,747 | | – | salaries and wages | 815 | 718 |
| 4,736 | 5,316 | | – | stores and other consumables | 638 | 574 |
| 3,684 | 3,019 | | – | fuel, power and water | 363 | 448 |
| 2,516 | 2,971 | | – | contractors | 358 | 305 |
| 313 | 791 | | – | services and other charges | 103 | 36 |
| 17,151 | 18,844 | | 2,277 | 2,081 |