| 10.2 | Trade and other receivables |
| | | 12/31/2017 | | 12/31/2016 | | ||||||||||||||
| | | Current | | Non-current | | Total | | Current | | Non-current | | Total | | ||||||
| | | ThUS$ | | ThUS$ | | ThUS$ | | ThUS$ | | ThUS$$ | | ThUS$ | | ||||||
| Trade receivables | | | 412,321 | | | - | | | 412,321 | | | 344,839 | | | - | | | 344,839 | |
| Prepayments | | | 16,177 | | | - | | | 16,177 | | | 6,621 | | | - | | | 6,621 | |
| Other receivables | | | 18,377 | | | 1,912 | | | 20,289 | | | 17,301 | | | 1,840 | | | 19,141 | |
| Total trade and other receivables | | | 446,875 | | | 1,912 | | | 448,787 | | | 368,761 | | | 1,840 | | | 370,601 | |
| | | 12/31/2017 | | 12/31/2016 | | ||||||||||||||
| | | Assets before allowances | | Allowance for doubtful trade receivables | | Assets for trade receivables, net | | Assets before allowances | | Allowance for doubtful trade receivables | | Assets for trade receivables, net | | ||||||
| | | ThUS$ | | ThUS$ | | ThUS$ | | ThUS$ | | ThUS$ | | ThUS$ | | ||||||
| Receivables related to credit operations, current | | | 427,400 | | | (15,079) | | | 412,321 | | | 361,656 | | | (16,817) | | | 344,839 | |
| Trade receivables, current | | | 427,400 | | | (15,079) | | | 412,321 | | | 361,656 | | | (16,817) | | | 344,839 | |
| Prepayments, current | | | 16,877 | | | (700) | | | 16,177 | | | 9,421 | | | (2,800) | | | 6,621 | |
| Other receivables, current | | | 23,409 | | | (5,032) | | | 18,377 | | | 19,300 | | | (1,999) | | | 17,301 | |
| Current trade and other receivables | | | 40,286 | | | (5,732) | | | 34,554 | | | 28,721 | | | (4,799) | | | 23,922 | |
| Other receivables, non-current | | | 1,912 | | | - | | | 1,912 | | | 1,840 | | | - | | | 1,840 | |
| Non-current receivables | | | 1,912 | | | - | | | 1,912 | | | 1,840 | | | - | | | 1,840 | |
| Total trade and other receivables | | | 469,598 | | | (20,811) | | | 448,787 | | | 392,217 | | | (21,616) | | | 370,601 | |