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7. Asset Retirement Obligation and Accrued Reclamation Costs (Details Narrative) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Asset Retirement Obligation And Accrued Reclamation Costs Details Narrative
Asset retirement obligation liability with reclamation obligations	$ 251,572	$ 265,782

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No definition available.

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Namespace Prefix:	UAMY_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Custom Element.

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No definition available.

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Name:	UAMY_AssetRetirementObligationLiabilities
Namespace Prefix:	UAMY_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant