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16. Business Segments (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Capital Expenditure	$ 3,575,408	$ 3,934,961	$ 2,473,750
United States Antimony [Member]
Capital Expenditure	100,158	288,364	160,536
Mexico Antimony [Member]
Capital Expenditure	3,299,027	3,318,552	1,988,345
Subtotal Antimony [Member]
Capital Expenditure	3,399,185	3,606,916	2,148,881
Zeloite (Member)
Capital Expenditure	$ 176,223	$ 328,045	$ 324,869

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Name:	UAMY_CapitalExpenditure
Namespace Prefix:	UAMY_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration