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12. Stockholder's Equity (Details Narrative) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2015
Issuance of common stock for warrants, amount	$ 170,000us-gaap_ProceedsFromIssuanceOfCommonStock
Director
Issuance of common stock for warrants, shares	125,000UAMY_ProceedsFromIssuanceOfCommonStockShares / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_DirectorMember
Issuance of common stock for warrants, amount	170,000us-gaap_ProceedsFromIssuanceOfCommonStock / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_DirectorMember
Issuance of common stock for director's fees, shares		183,825UAMY_IssuanceOfCommonStockForDirectorsFeesShares / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_DirectorMember
Directors fees payables	125,000us-gaap_PaymentsForFees / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_DirectorMember
Accrued directors fees		37,500us-gaap_AccruedProfessionalFeesCurrentAndNoncurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_DirectorMember
Bert Denton
Issuance of Common Stock for Services		5,000UAMY_IssuanceOfCommonStockForServices / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = UAMY_BertDentonMember
Issuance of Common Stock for Services, amount		$ 2,950UAMY_IssuanceOfCommonStockForServicesAmount / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = UAMY_BertDentonMember

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