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CONSOLIDATED FINANCIAL STATEMENT DETAILS - Accounts receivable and other assets and Inventories (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Accounts receivable and other assets: |  |
Trade receivables | $ 3.6 | $ 4.5
Prepaid expenses | 21.3 | 19.8
VAT receivable | 48.4 | 36.2
Deposits | 8.5 | 11.1
Other | 19.6 | 19.7
Total accounts receivable and other assets | 101.4 | 91.3
Inventories: |  |
Ore in stockpiles | 299.9 | 242.6
Ore on leach pads | 375.0 | 358.5
In-process | 113.5 | 122.3
Finished metal | 50.5 | 91.5
Materials and supplies | 540.7 | 519.3
Inventories, subtotal | 1,379.6 | 1,334.2
Long-term portion of ore in stockpiles and ore on leach pads | (327.6) | (239.9)
Inventories | $ 1,052.0 | $ 1,094.3

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