Sigma Lithium Corporation engages in the exploration and development of lithium deposits in Brazil. It holds 100% interest in the Grota do Cirilo, Genipapo, Santa Clara, and São José properties comprising 27 mineral rights covering an area of approximately 191 square kilometers located in the Araçuaí and Itinga regions of the state of Minas Gerais, Brazil.

MP Materials Corp. owns and operates rare earth mining and processing facilities. It owns and operates the Mountain Pass Rare Earth mine located in the Western Hemisphere.

Vale S.A., together with its subsidiaries, produces and sells iron ore, iron ore pellets, nickel, and copper in Brazil and internationally.

Lithium Americas Corp. operates as a resource company in the United States and Argentina. The company explores for lithium deposits. It owns interests in the Cauchari-Olaroz project located in Jujuy province of Argentina; Thacker Pass project located in north-western Nevada; and Pastos Grandes project located in the Salta province of Argentina.

NioCorp Developments Ltd. engages in the exploration and development of mineral deposits in North America. It owns and develops the Elk Creek niobium/scandium/titanium project that owns one 226.43-acre parcel of land and associated mineral rights, and an additional 40 acres of mineral rights, as well as an optioned land package that covers an area of 1,396 acres located in Johnson County, southeast Nebraska.

Teck Resources Limited engages in exploring for, acquiring, developing, and producing natural resources in Asia, Europe, and North America. It operates through Steelmaking Coal, Copper, Zinc, Energy, and Corporate segments.

BHP Group Limited operates as a resources company in Australia, Europe, China, Japan, India, South Korea, the rest of Asia, North America, South America, and internationally.

Rio Tinto Group engages in exploring, mining, and processing mineral resources worldwide. The company operates through Iron Ore, Aluminium, Copper, and Minerals Segments.