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Note 3 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2015
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
Estimated
 
   
Useful Life (years)
 
Building and Building Improvements
    5 40  
Mining equipment
    2 7  
Office and shop furniture and equipment
    3 7  
Vehicles
      5