Layout of US Antimony’s operations. Credit: United States Antimony Corp. United States Antimony Corporation (NYSE: UAMY) has secured a sole-source, five-year contract worth up to $245 million from the US Defense Logistics Agency (DLA) to supply antimony metal ingots for the national defense stockpile.The news sent US Antimony’s shares soaring 17.8$975 million.Securing domestic supplyAntimony, a grey metal listed by the US ...