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ACCOUNTS RECEIVABLE AND OTHER CURRENT ASSETS (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Accounts receivable |  |
Amounts due from concentrate sales | $ 76 | $ 110
Other receivables | 172 | 129
Accounts receivable | 248 | 239
Other current assets |  |
Derivative assets (note 25f) | 2 | 2
Goods and services taxes recoverable | 182 | 167
Prepaid expenses | 72 | 68
Other | 51 | 84
Other current assets | 307 | 321
Tanzania |  |
Disclosure of Trade Receivable and Other Current Assets [Line Items] |  |
VAT and fuel tax recoverables | 67 | 32
ZAMBIA |  |
Disclosure of Trade Receivable and Other Current Assets [Line Items] |  |
VAT and fuel tax recoverables | 60 | 31
Argentina |  |
Disclosure of Trade Receivable and Other Current Assets [Line Items] |  |
VAT and fuel tax recoverables | 22 | 49
Chile |  |
Disclosure of Trade Receivable and Other Current Assets [Line Items] |  |
VAT and fuel tax recoverables | 2 | 3
Dominican Republic |  |
Disclosure of Trade Receivable and Other Current Assets [Line Items] |  |
VAT and fuel tax recoverables | 12 | 19
Peru |  |
Disclosure of Trade Receivable and Other Current Assets [Line Items] |  |
VAT and fuel tax recoverables | $ 7 | $ 8

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