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PLANT, EQUIPMENT AND MINING PROPERTIES (Tables)
12 Months Ended
Dec. 31, 2019
Plant Equipment And Mining Properties Tables Abstract  
Schedule of Plant, Equipment and Mining Properties

   

Mining

properties

    Office equipment, furniture, and fixtures     Computer equipment     Mine machinery and transportation equipment     Mill machinery and processing equipment     Buildings     Total  
    $     $     $     $     $     $     $  
COST                                          
Balance at January 1, 2018     12,482       133       283       16,377       9,866       5,625       44,766  
Additions / Transfers     588       17       77       990       7,856       1,134       10,662  
Disposals     -       -       -       -       (33 )     -       (33 )
Effect of movements in exchange rates     (108 )     (1 )     (2 )     (110 )     (86 )     (49 )     (356 )
Balance at December 31, 2018     12,962       149       358       17,257       17,603       6,710       55,039  
Additions / Transfers     664       381       (6 )     (648 )     148       2,770       3,289  
Disposals     -       (6 )     (12 )     (3,723 )     (231 )     (206 )     (4,178 )
Effect of movements in exchange rates     31       -       1       33       34       13       112  
Balance at December 31, 2019     13,637       524       341       12,919       17,554       9,287       54,262  
                                                         
ACCUMULATED DEPLETION AND DEPRECIATION                                                        
Balance at January 1, 2018     4,592       48       144       6,084       1,139       601       12,608  
Additions / Transfers     1,549       17       32       799       1,287       112       3,796  
Effect of movements in exchange rates     (39 )     -       (1 )     (53 )     (10 )     (5 )     (108 )
Balance at December 31, 2018     6,102       65       175       6,830       2,416       708       16,296  
Additions / Transfers     1,952       22       49       51       1,619       714       4,407  
Disposals     -       (3 )     (11 )     (2,040 )     (27 )     (49 )     (2,130 )
Effect of movements in exchange rates     12       -       -       13       5       1       31  
Balance at December 31, 2019     8,066       84       213       4,854       4,013       1,374       18,604  
                                                         
NET BOOK VALUE                                                        
At December 31, 2019     5,571       440       128       8,065       13,541       7,913       35,658  
At December 31, 2018     6,860       84       183       10,427       15,187       6,002       38,743