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6. Properties, Plants and Equipment (Tables)
12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
Properties, Plants and Equipment
     Antimony Segment     Zeolite Segment       Precious Metals        
2019   USAC     USAMSA     BRZ     Segment     TOTAL  
Plant & Equipment   $ 783,290     $ 9,164,600     $ 3,729,061     $ 813,714     $ 14,490,665  
Buildings     247,210       902,707       410,780       -       1,560,697  
Mineral Rights and Interests     -       816,786       3,664       -       820,450  
Land & Other     3,274,572       2,529,294       15,310       -       5,819,176  
      4,305,072       13,413,387       4,158,815       813,714       22,690,988  
Accumulated Depreciation     (2,673,972 )     (4,612,567 )     (2,971,625 )     (245,976 )     (10,504,140 )
    $ 1,631,100     $ 8,800,820     $ 1,187,190     $ 567,738     $ 12,186,848  

 

    Antimony Segment     Zeolite Segment     Precious Metals        
2018   USAC     USAMSA     BRZ     Segment     TOTAL  
Plant & Equipment   $ 743,767     $ 8,466,461     $ 3,690,249     $ 792,628     $ 13,693,105  
Buildings     247,210       900,992       391,305       -       1,539,507  
Mineral Rights and Interests     -       3,793,502       3,664       -       3,797,166  
Land & Other     3,274,572       2,529,294       15,310       -       5,819,176  
      4,265,549       15,690,249       4,100,528       792,628       24,848,954  
Accumulated Depreciation     (2,630,234 )     (4,029,480 )     (2,785,159 )     (176,909 )     (9,621,782 )
    $ 1,635,315     $ 11,660,769     $ 1,315,369     $ 615,719     $ 15,227,172