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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 | $ 430,000 UAMY_PresentValueOfFutureCost |  |
Future cost year | 2031 |  |
Net present value | 134,000 UAMY_FutureNetPresentValue |  |
Asset retirement obligation liability with reclamation obligations |  | $ 255,190 UAMY_AssetRetirementObligationLiabilities | $ 257,580 UAMY_AssetRetirementObligationLiabilities

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- Details
Name: | UAMY_AssetRetirementObligationDetailsNarrativeAbstract
Namespace Prefix: | UAMY_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Custom Element. + References No definition available. + Details
Name: | UAMY_AssetRetirementObligationLiabilities
Namespace Prefix: | UAMY_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Custom Element. + References No definition available. + Details
Name: | UAMY_FutureNetPresentValue
Namespace Prefix: | UAMY_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Custom Element. + References No definition available. + Details
Name: | UAMY_PresentValueFutureCostYear
Namespace Prefix: | UAMY_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

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- Definition Custom Element. + References No definition available. + Details
Name: | UAMY_PresentValueOfFutureCost
Namespace Prefix: | UAMY_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration