Rio Tinto Group engages in exploring, mining, and processing mineral resources worldwide. The company operates through Iron Ore, Aluminium, Copper, and Minerals Segments. The Iron Ore segment engages in the iron ore mining, and salt and gypsum production in Western Australia. The Aluminum segment is involved in bauxite mining; alumina refining; and aluminium smelting. The Copper segment engages in mining and refining of copper, gold, silver, molybdenum, and other by-products and exploration activities. The Minerals segment is involved in mining and processing of borates, titanium dioxide feedstock, and iron concentrate and pellets; diamond mining, sorting, and marketing; and development projects for battery materials, such as lithium. It also owns and operates open pit and underground mines; and refineries, smelters, processing plants and power, and shipping facilities. Rio Tinto Group was founded in 1873 and is headquartered in London, the United Kingdom.

Newmont Corporation engages in the production and exploration of gold. It also explores for copper, silver, zinc, and lead. The company has operations and/or assets in the United States, Canada, Mexico, Dominican Republic, Peru, Suriname, Argentina, Chile, Australia, Papua New Guinea, Ecuador, Fiji, and Ghana. The company was founded in 1916 and is headquartered in Denver, Colorado.

Freeport-McMoRan Inc. engages in the mining of mineral properties in North America, South America, and Indonesia. It primarily explores for copper, gold, molybdenum, silver, and other metals. The company's assets include the Grasberg minerals district in Indonesia; Morenci, Bagdad, Safford, Sierrita, and Miami in Arizona; Chino and Tyrone in New Mexico; and Henderson and Climax in Colorado, North America, as well as Cerro Verde in Peru and El Abra in Chile. The company was formerly known as Freeport-McMoRan Copper & Gold Inc. and changed its name to Freeport-McMoRan Inc. in July 2014. Freeport-McMoRan Inc. was incorporated in 1987 and is headquartered in Phoenix, Arizona.

Barrick Gold Corporation engages in the exploration, mine development, production, and sale of gold and copper properties in Canada and internationally. The company also explores and sells silver and energy materials. It has ownership interests in producing gold mines located in Argentina, Canada, Côte d'Ivoire, the Democratic Republic of Congo, the Dominican Republic, Mali, Tanzania, and the United States. The company also has ownership interests in producing copper mines located in Chile, Saudi Arabia, and Zambia; and various other projects located in the Americas, Asia, and Africa. Barrick Gold Corporation was founded in 1983 and is based in Toronto, Canada.

ArcelorMittal S.A., together with its subsidiaries, operates as integrated steel and mining companies in the United States, Europe, and internationally. It offers semi-finished flat products, including slabs; finished flat products comprising plates, hot- and cold-rolled coils and sheets, hot-dipped and electro-galvanized coils and sheets, tinplate, and color coated coils and sheets; semi-finished long products, such as blooms and billets; finished long products consisting of bars, wire-rods, structural sections, rails, sheet piles, and wire-products; and seamless and welded pipes and tubes. The company also provides mining products, such as iron ore lumps, fines, concentrates, pellets, and sinter feeds; and coking coal. It sells its products to various customers in the automotive, appliance, engineering, construction, energy, and machinery industries through a centralized marketing organization, as well as distributors. The company has iron ore mining activities in Brazil, Bosnia, Canada, Liberia, Mexico, South Africa, and Ukraine. ArcelorMittal S.A. was founded in 1976 and is headquartered in Luxembourg City, Luxembourg.

Teck Resources Limited engages in exploring for, acquiring, developing, and producing natural resources in Asia, Europe, and North America. The company operates through Steelmaking Coal, Copper, Zinc, and Energy segments. Its principal products include copper, zinc, steelmaking coal, and blended bitumen. The company also produces lead, silver, and molybdenum; and various specialty and other metals, chemicals, and fertilizers. In addition, it explores for gold. The company was formerly known as Teck Cominco Limited and changed its name to Teck Resources Limited in April 2009. The company was founded in 1913 and is headquartered in Vancouver, Canada.

Harmony Gold Mining Company Limited engages in the exploration, extraction, and processing of mineral properties in South Africa, Papua New Guinea, and Australasia. The company explores for gold, uranium, silver, and copper deposits. It has eight underground operations in the Witwatersrand Basin; the Kraaipan Greenstone Belt; and various surface source operations in South Africa. In addition, the company owns interests in the Hidden Valley, an open-pit gold and silver mine; and the Wafi-Golpu project located in Morobe Province in Papua New Guinea. Further, it holds interest in Rosby and Eva Copper Project located in Queensland, Australia. The company was incorporated in 1950 and is based in Randfontein, South Africa.

Peabody Energy Corporation engages in coal mining business in the United States, Japan, Taiwan, Australia, India, Brazil, Belgium, Chile, France, Indonesia, China, Vietnam, South Korea, Germany, and internationally. The company operates through Seaborne Thermal, Seaborne Metallurgical, Powder River Basin, Other U.S. Thermal, and Corporate and Other segments. It is involved in the mining, preparation, and sale of thermal coal primarily to electric utilities; mining bituminous and sub-bituminous coal deposits; low sulfur and high British thermal unit thermal coal; and mining metallurgical coal, such as hard coking coal, semi-hard coking coal, semi-soft coking coal, and pulverized coal injection coal. The company supplies coal primarily to electricity generators, industrial facilities, and steel manufacturers. It also engages in marketing and brokering of coal from other coal producers; trading of coal and freight-related contracts, as well as provides transportation-related services. The company was founded in 1883 and is headquartered in Saint Louis, Missouri.