Golden Minerals (formerly known as Apex Silver Mines), was founded by Thomas Kaplan, from Denver, Colorado.

It is a US-American transnational mining corporation with a tax haven address in the Cayman Islands.

Apex's largest asset was the San Cristóbal open-pit silver, lead and zinc mine located in Potosí Department, Bolivia.

Golden Minerals owns and controls many exploration properties located primarily in the high potential mining districts in Latin America, including the feasibility stage El Quevar Project in northern Argentina.

[2][3][4] In connection with Apex' emergence from bankruptcy as a newly formed Delaware corporation named Golden Minerals Company, Apex sold their remaining 65% interest in the San Cristóbal mine to Sumitomo.