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COST OF SALES | 12 Months Ended
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Dec. 31, 2019
Analysis of income and expense [abstract] |
COST OF SALES | COST OF SALES
| Gold | Copper | Other 4 | Total
For the years ended December 31 | 2019 |  | 2018 |  | 2019 |  | 2018 |  | 2019 |  | 2018 |  | 2019 |  | 2018 |
Direct mining cost 1,2,3 |  | $4,274 |  |  | $3,130 |  |  | $224 |  |  | $344 |  |  | $6 |  |  | $7 |  |  | $4,504 |  |  | $3,481 |
Depreciation | 1,902 |  | 1,253 |  | 100 |  | 170 |  | 30 |  | 34 |  | 2,032 |  | 1,457 |
Royalty expense | 308 |  | 196 |  | 34 |  | 39 |  | — |  | — |  | 342 |  | 235 |
Community relations | 30 |  | 42 |  | 3 |  | 5 |  | — |  | — |  | 33 |  | 47 |
Total |  | $6,514 |  |  | $4,621 |  |  | $361 |  |  | $558 |  |  | $36 |  |  | $41 |  |  | $6,911 |  |  | $5,220 |
1 | Direct mining cost related to gold and copper includes charges to reduce the cost of inventory to net realizable value of $26 million (2018: $199 million). Refer to note 17.
2 | Direct mining cost related to gold includes the costs of extracting by-products and export duties paid in Argentina.
3 | Includes employee costs of $1,350 million (2018: $1,001 million).
4 | Other includes realized hedge gains and losses and corporate amortization.

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