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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Current assets:    
Cash and cash equivalents $ 1,431 $ 1,904
Short-term investments (Note 3) 15,144 21,975
Other investments, at fair value (Note 3) 3,746 4,994
Other current assets 794 648
Total current assets 21,115 29,521
Non-current assets:    
Mineral properties (Note 4) 2,471 3,874
Plant and equipment, net (Note 5) 7,555 8,213
Total non-current assets 10,026 12,087
Total assets 31,141 41,608
Current liabilities:    
Accounts payable 830 252
Accrued liabilities and other 986 481
Provision for environmental liability 242 350
Total current liabilities 2,058 1,083
Total liabilities 2,058 1,083
Commitments and contingencies – (Note 8)
Shareholders' equity:    
Common shares, no par value - unlimited shares authorized; shares outstanding: 2017 - 99,412,007 and 2016 - 97,786,608 (Note 6) 456,053 455,443
Accumulated other comprehensive income (loss) (2) 15
Accumulated deficit (426,968) (414,933)
Total shareholders' equity 29,083 40,525
Total liabilities and shareholders' equity $ 31,141 $ 41,608