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Cost of sales and expenses by their nature (Tables) | 12 Months Ended
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Dec. 31, 2019
Expenses by nature [abstract] |
Schedule of Cost of Sales and Administration Expenses | At the years ended at December 31, 2019, 2018 and 2017, the cost of sales and administration expenses consist of the following:
| 2 0 1 9 |  | 2 0 1 8 |  | 2 0 1 7
Raw materials and consumables | $ | 16,411,788 |  | $ | 15,565,242 |  | $ | 11,268,400
Electrical energy |  | 3,303,640 |  |  | 2,536,387 |  |  | 2,123,658
Ferroalloys |  | 2,137,671 |  |  | 1,973,586 |  |  | 1,734,914
Refractories |  | 707,214 |  |  | 613,563 |  |  | 492,781
Oxygen |  | 276,648 |  |  | 279,272 |  |  | 213,838
Electrodes |  | 1,293,096 |  |  | 1,463,091 |  |  | 419,741
Gas and fuels |  | 962,001 |  |  | 766,163 |  |  | 612,605
Labor |  | 2,042,433 |  |  | 3,181,556 |  |  | 2,699,414
Operation materials |  | 919,893 |  |  | 954,415 |  |  | 1,000,752
Depreciation and amortization |  | 1,108,629 |  |  | 1,112,418 |  |  | 1,465,759
Maintenance |  | 2,221,595 |  |  | 2,243,255 |  |  | 2,586,507
Other expenses |  | 319,958 |  |  | 954,379 |  |  | 615,100
| $ | 31,704,566 |  | $ | 31,643,327 |  | $ | 25,233,469
| 2 0 1 9 |  | 2 0 1 8 |  | 2 0 1 7
Cost of sales | $ | 30,067,141 |  | $ | 30,563,315 |  | $ | 23,994,526
Administrative expenses |  | 1,637,425 |  |  | 1,080,012 |  |  | 1,238,943
| $ | 31,704,566 |  | $ | 31,643,327 |  | $ | 25,233,469

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- Definition The disclosure of expenses. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_10_e&doctype=Standard -URIDate 2019-03-27 + Details
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