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7. Asset Retirement Obligation (Details Narrative) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2014
Dec. 31, 2013
Asset Retirement Obligation Details Narrative      
Future cost $ 430,000UAMY_PresentValueOfFutureCost    
Future cost year 2031    
Net present value 134,000UAMY_FutureNetPresentValue    
Asset retirement obligation liability with reclamation obligations   $ 255,190UAMY_AssetRetirementObligationLiabilities $ 257,580UAMY_AssetRetirementObligationLiabilities