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Note 9 - Production Costs (Tables)
 12 Months Ended
Dec. 31, 2020
Statement Line Items [Line Items]  
Disclosure of components for cost of sales [text block]
    2020     2019     2018  
                   
Salaries and wages    
16,122
      
13,905
      
13,160
  
Consumable materials – Operations    
14,938
      
13,020
      
12,143
  
Consumable materials – COVID-19    
824
      
–
      
–
  
Electricity costs    
8,312
      
6,383
      
9,313
  
Site restoration    
–
      
–
      
84
  
Safety    
708
      
525
      
592
  
Cash-settled share-based expense (note 30.1(a))    
634
      
107
      
43
  
On mine administration    
1,800
      
2,159
      
3,569
  
Pre-feasibility exploration costs    
373
      
301
      
411
  
     
43,711
      
36,400
      
39,315