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Production costs by nature | 12 Months Ended
--- | ---
Dec. 31, 2018
Analysis of income and expense [abstract] |
Production costs by nature | Production costs by nature
|  | 2018 |  |  | 2017 |
|  | $ |  |  | $ |
Raw materials and consumables |  | 310,534 |  |  | 184,746 |
Contractors |  | 80,884 |  |  | 63,328 |
Salaries and employee benefits |  | 122,782 |  |  | 74,010 |
Electricity |  | 19,476 |  |  | 18,652 |
Equipment rental |  | 4,733 |  |  | 6,987 |
Other |  | 30,347 |  |  | 21,767 |
Silver credits |  | (5,092 | ) |  | (7,850 | )
Change in inventories |  | (13,001 | ) |  | (26,140 | )
Capitalized to mining interests |  | (74,961 | ) |  | (33,106 | )
|  | 475,702 |  |  | 302,394 |
Salaries and employee benefits expense included in general and administrative costs were $30 million for the year ended December 31, 2018 (2017 - $22 million).

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- Definition The disclosure of the cost of sales. [Refer: Cost of sales] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_10_e&doctype=Standard -URIDate 2017-03-09 + Details
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