Aurubis
OTCMKTS:AIAGYAurubis AG processes metal concentrates and recycling materials in Germany. The company processes scrap metals, organic and inorganic metalbearing recycling raw materials, and industrial residues. It also offers wire rods and specialty wires, shapes, bars and profiles, industrial rolled products, and architectural rolled products. In addition, the company produces gold, silver, tin, lead, lead-bismuth alloy, lead-antimony litharge, tellurium metals, and tellurium dioxide. Further, the company engages in the recycling of copper, copper scrap, alloy scrap and other recycling materials, precious metals, and other non-ferrous metals. Additionally, it produces sulfuric acid, iron-silicate, smelter intermediates, and selenium, as well as produces various products from purchased copper and copper alloy scrap, electronic scrap, and industrial residues. The company was formerly known as Norddeutsche Affinerie AG and changed its name to Aurubis AG in April 2009. Aurubis AG was founded in 1866 and is headquartered in Hamburg, Germany.
Arizona Sonoran Copper
OTC:ASCUFArizona Sonoran Copper Company Inc. engages in the identification, acquisition, exploration, development, and production of base metal properties. The company's principal asset is the 100% interest in the Cactus Project located in, Casa Grande Arizona. The company was formerly known as Elim Mining Incorporated and changed its name to Arizona Sonoran Copper Company Inc. in July 2021. Arizona Sonoran Copper Company Inc. was incorporated in 2019 and is based in Toronto, Canada.
Capstone Copper
OTCMKTS:CSCCFCapstone Copper Corp. operates as a copper mining company in the United States, Chile, and Mexico. It primarily explores for copper, silver, zinc, and other metals. The company owns 100% interests in Pinto Valley copper mine located in the Arizona, the United States; Mantos Blancos copper-silver mine located in the Region of Antofagasta, Chile; Santo Domingo copper-iron-gold-cobalt project located in the Atacama region, Chile; and Cozamin copper-silver mine located in the Zacatecas, Mexico. It holds 70% interest in the Mantoverde coppergold mine located in the Region of Atacama, Chile; and a portfolio of exploration properties in Mexico. Capstone Copper Corp. is headquartered in Vancouver, Canada.
OZ Minerals
OTCMKTS:OZMLFOZ Minerals Ltd. is a copper-focused international company. It operates through the following segments: Prominent Hill, Carrapateena, Carajas, West Must Grave, Exploration and Development, and Corporate. The Prominent Hill segment engages in the mining and processing high grade underground ore containing copper, gold and silver along with open pit ore from stockpiles. The Carrapateena segment is involved in mining and processing underground ore containing copper, gold, and silver. The Carajás segment focuses on mining and processing open pit ore containing copper and gold from the Antas mine and developing the Pedra Branca Mine in the Carajas Hub in Brazil. The Exploration and Development segment includes exploration and evaluation activities associated with other projects. The Corporate segment offers corporate activities such as other investment in equity securities and cash balances. The company was founded in 2008 and is headquartered in Adelaide, Australia.