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ENVIRONMENTAL LIABILITIES (Tables) | 12 Months Ended
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Dec. 31, 2020
ENVIRONMENTAL LIABILITIES |
Schedule of provision for environmental liabilities |
|  | 2020 |  | 2019
Provision for environmental liabilities |  | 297,094 |  | 112,308
Current |  | 125,992 |  | 60,913
Non-current |  | 171,102 |  | 51,395

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