Hudbay

The company specializes in developing and producing copper, with a primary focus on the Cactus Project located in Pinal County, Arizona.

Rockcliff Metals Corporation is a Canadian resource development and exploration company focused on advancing and consolidating high-grade copper and zinc deposits in the Snow Lake area of Manitoba. The company holds a 51% interest in its flagship Talbot Property and has full ownership of the Tower and Rail properties, among others. Rockcliff is a key landholder in the Flin Flon-Snow Lake greenstone belt, which is known for its rich deposits of copper, zinc, gold, and silver. Its portfolio encompasses over 45,000 hectares and includes eight undeveloped volcanogenic massive sulphide deposits and five lode-gold properties, including the historic Rex-Laguna gold mine. Rockcliff's exploration efforts focus on the discovery of unmined metal deposits, with particular attention to its high-grade copper and historical zinc deposits. The company, founded in 2005 and headquartered in Sudbury, Canada, was previously known as Rockcliff Copper Corporation before adopting its current name in November 2017.

Copper Mountain Mining Corporation is a Canadian mining company that specializes in the exploration and production of copper, gold, and silver deposits. Established in 2006 and headquartered in Vancouver, the company’s flagship asset is the Copper Mountain mine, which encompasses a significant land area of 6,702.1 hectares near Princeton, British Columbia. The mine consists of 135 crown granted mineral claims, 176 located mineral claims, 15 mining leases, and 12 fee simple properties. Copper Mountain Mining focuses on project development and efficient operations while maintaining a diverse portfolio that includes assets in Peru and the United States. The company's strategic approach emphasizes low-risk operations in mining-friendly jurisdictions, enabling the management team to effectively finance, develop, and operate sustainable, cash-generating mining projects.

Mason Resources Corp. is a Canadian exploration company focused on the acquisition, exploration, and evaluation of mineral properties in the United States, primarily targeting copper. The company's key asset is the Ann Mason Project, a significant copper-molybdenum porphyry project located in the Yerington District of Nevada, which includes two deposits, Ann Mason and Blue Hill, along with various earlier-stage targets. The Ann Mason deposit is recognized as one of the largest undeveloped copper porphyry resources in North America. Additionally, Mason Resources owns the Lordsburg property, a copper-gold porphyry project situated in a historic mining district in New Mexico. Established in 2017 and headquartered in Vancouver, Canada, Mason Resources benefits from favorable infrastructure, strong community support, and a clear permitting process, positioning it well within a favorable mining jurisdiction.

Augusta Resource Corporation, a development stage company, is engaged in the acquisition, exploration, and development.

Norsemont Mining specializes in mining services, focusing on the acquisition, development, and exploration of copper deposits.

Lundin Mining Corporation is a diversified base metals mining company with operations in Portugal, Sweden, and Spain. The company produces copper, zinc, lead, and nickel and also holds a 24% equity stake in the Tenke Fungurume copper/cobalt mine in the Democratic Republic of Congo and the Kokkola cobalt refinery in Finland. Lundin Mining Corporation focuses on mining and refining base metals to meet global demand for these essential materials.