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6. Properties, Plants and Equipment (Details Narrative) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
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Property, Plant and Equipment [Abstract] |  |
Assets not yet placed in service | $ 755,978 | $ 1,306,579

X
- References No definition available. + Details
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Namespace Prefix: | UAMY_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration