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6. Long-Term Debt (Tables)
 3 Months Ended
Mar. 31, 2013
Debt Disclosure [Abstract]  
Long - Term Debt
Long-Term debt at March 31, 2013 and December 31, 2012, is as follows:            
    March 31, 2013     December 31, 2012  
Note payable to Thermo Fisher Financial Co., bearing interest            
at 5.67%; payable in monthly installments of $3,522; maturing            
September 2013; collateralized by equipment.   $ 24,134     $ 34,310  
Note payable to Thermo Fisher Financial Co., bearing interest                
at 8.54%; payable in monthly installments of $2,792; maturing                
December 2013; collateralized by equipment.     30,708       30,708  
Note payable to Stearns Bank, bearing interest                
at 6.9%; payable in monthly installments of $3,555; maturing                
December 2014; collateralized by equipment.     70,150       79,500  
Note payable to Western States Equipment Co., bearing interest                
at 6.15%; payable in monthly installments of $2,032; maturing                
June 2015; collateralized by equipment.     49,360       56,390  
Note payable to CNH Capital America, LLC, bearing interest                
at 4.5%; payable in monthly installments of $505; maturing                
June 2013; collateralized by equipment.     2,045       3,478  
Note payable to Catepillar Financial, bearing interest at 5.95%;                
payable in monthly installments of $827; maturing September 2015;                
collateralized by equipment.     22,999       25,823  
Note payable to GE Capital, bearing interest at 2.25%; payable in                
monthly installments of $359; maturing July 2013; collateralized by                
equipment.     1,429       2,847  
Note payable to De Lage Landen Financial Services                
bearing interest at 5.30%; payable in monthly installments of $549;                
maturing  March 2016; collateralized by equipment.     18,236       19,629  
Note payable to Phyllis Rice, bearing interest                
at 1%; payable in monthly installments of $2,000; maturing                
March 2015; collateralized by equipment.     49,364       55,365  
Note payable to De Lage Landen Financial Services,                
bearing interest at 5.12%; payable in monthly installments of $697;                
maturing December 2014; collateralized by equipment.     14,609       16,496  
Note payable to Catepillar Financial, bearing interest                
at 6.15%; payable in monthly installments of $766; maturing                
August 2014; collateralized by equipment.     12,431       14,535  
Note payable to De Lage Landen Financial Services,                
bearing interest at 5.28%; payable in monthly installments of $709;                
maturing June 2014; collateralized by equipment.     9,599       12,235  
Note payable for Corral Blanco land, bearing interest at 6.0%,                
due May 1, 2013; collateralized by land     86,747       86,747  
Note payable for Soyatal Mine, non-interest bearing,                
annual payments of $200,000  through 2019     1,067,431       1,067,431  
      1,459,242       1,505,494  
Less Current portion     (469,154 )     (461,354 )
Non-Current portion   $ 990,088     $ 1,044,140  
Debt Outstanding
Twelve Months Ending March 31,      
2014   $ 469,154  
2015     243,689  
2016     164,489  
2017     157,919  
2018     168,974  
2019     180,802  
2020     74,215  
    $ 1,459,242