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9. Concentrations of Risk (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Sales to Three Largest Customers	$ 1,615,840us-gaap_SalesRevenueGoodsNet	$ 2,067,048us-gaap_SalesRevenueGoodsNet
Total percentage of revenue	54.82%us-gaap_ConcentrationRiskPercentage1	70.10%us-gaap_ConcentrationRiskPercentage1
Alpha Gary Corporation
Sales to Three Largest Customers	969,960us-gaap_SalesRevenueGoodsNet / us-gaap_MajorCustomersAxis = UAMY_AlphaGaryCorporationMember	1,142,850us-gaap_SalesRevenueGoodsNet / us-gaap_MajorCustomersAxis = UAMY_AlphaGaryCorporationMember
Ampacet Corporation
Sales to Three Largest Customers	305,407us-gaap_SalesRevenueGoodsNet / us-gaap_MajorCustomersAxis = UAMY_AmpacetMember
Kohler Corporation
Sales to Three Largest Customers	340,473us-gaap_SalesRevenueGoodsNet / us-gaap_MajorCustomersAxis = UAMY_KohlerCorporationMember	778,766us-gaap_SalesRevenueGoodsNet / us-gaap_MajorCustomersAxis = UAMY_KohlerCorporationMember
Teck American, Inc.
Sales to Three Largest Customers		$ 145,432us-gaap_SalesRevenueGoodsNet / us-gaap_MajorCustomersAxis = UAMY_TeckAmericanIncMember

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

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