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Exploration in operating units | 12 Months Ended
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Dec. 31, 2020
Exploration in operating units |
Exploration in operating units | 22. Exploration in operating units This caption is made up as follows:
|  | 2020 |  | 2019 |  | 2018
|  | US$(000) |  | US$(000) |  | US$(000)
Beginning balance of finished goods and products in process, net of depreciation and amortization |  | 444 |  | 2,837 |  | 5,157
Services provided by third parties |  | 20,406 |  | 33,591 |  | 71,513
Direct labor |  | 3,361 |  | 1,747 |  | 2,349
Purchase of land |  | 2,162 |  | — |  | —
Consumption of materials and supplies |  | 1,426 |  | 3,712 |  | 8,594
Short-term and low-value lease |  | 766 |  | 1,186 |  | 2,065
Electricity and water |  | 471 |  | 905 |  | 1,337
Transport |  | 12 |  | 71 |  | 192
Maintenance and repair |  | 9 |  | 10 |  | 450
Other minor |  | 283 |  | 548 |  | 910
Total exploration in operating units |  | 28,896 |  | 41,770 |  | 87,410
Final balance of products in process and finished goods, net of depreciation and amortization |  | (1,296) |  | (444) |  | (2,837)
|  | 28,044 |  | 44,163 |  | 89,730
As of December 31, 2020, 2019 and 2018, disbursements of exploration in operating amount to US$28.0 million, US$44.2 million and US$89.7 million, respectively, which are presented in the “Payments to suppliers and third parties, and other net” caption of the consolidated statements of cash flows.

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