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Note 18 - Inventories (Tables)
 12 Months Ended
Dec. 31, 2018
Statement Line Items [Line Items]  
Disclosure of components of inventories [text block]
    2018     2017  
             
Consumable stores    
9,210
      
8,776
  
Gold in process    
217
      
399
  
     
9,427
      
9,175