Amerigo Resources is engaged in the production of copper and molybdenum concentrates with operations in Chile. Through its subsidiary, Minera Valle Central S.A., Co. has a contract with Chile's state-owned copper producer National Copper Corporation to process the tailings from El Teniente underground copper mine.

Endurance Gold is engaged in the exploration and development of mineral properties in North America and has not yet determined whether its properties contain ore reserves that are economically recoverable. The recoverability of the amounts expended on mineral interests by Co. is dependent upon the existence of economically recoverable reserves, the ability of Co. to obtain necessary financing to complete exploration and development of its mineral properties and upon future profitable production or proceeds from disposition of its mineral interests.

GIGA Metals is an exploration stage mineral resources company engaged in the acquisition and exploration of mineral properties, primarily in northern British Columbia. Co. has not yet identified any mineral resource on any of its properties that is of a commercially exploitable quantity.

Rio Tinto is engaged in finding, mining and processing mineral resources. Co. has four product groups: iron ore, which supplies the global seaborne iron ore trade; aluminium, which includes bauxite mines, alumina refineries, and aluminium smelters; Copper and Diamonds, which has managed operations in Australia, Canada, Mongolia and the U.S., and non-managed operations in Chile and Indonesia, with by-product including gold, silver, molybdenum and others such as sulphuric acid, rhenium, and lead carbonate; and Energy and Minerals, which comprises mining, refining and marketing operations across borates, coal, iron ore concentrate and pellets, salt, titanium dioxide and uranium sectors.

Santacruz Silver Mining is engaged in the operation, acquisition, exploration and development of mineral properties in Mexico, with a primary focus on silver, but also including gold, zinc and lead. Co. is focused on meeting and maintaining its primary production objective of producing approximately 1.5 million silver equivalent ounces on a yearly basis at its producing property, the Rosario Mine. In addition, Co. is exploring three other mineral properties, being the San Felipe Project (an advanced stage project), the Gavilanes Project (an exploration project), and the El Gachi Property (an early stage exploration project).

Tempo Gold is in the exploration stage and is engaged in the acquisition, exploration and development of gold resource properties in Tanzania, East Africa.