- Noranda
 - Producers of zinc and nickel, as well as copper, primary and fabricated aluminium, lead, sulphuric acid, cobalt, and precious metals. - Molycorp Inc.
- A lanthanides (rare earth) and molybdenum mining and metals company.
- Central African Mining & Exploration Company plc
- Mines for semi precious metals, tantalum, and associated minerals.
- Outokumpu Oy
- Focuses on base metals production, stainless steel, copper products and technology.
- LionOre Mining International
- Gold and nickel mining operations.
- Alumina Limited
- Has interests in bauxite mining, alumina refining, alumina based chemicals, and aluminium smelters.
- Antam Resources International
- Run nickel and gold mines, in addition to bauxite and iron sand.
- Tiomin Resources Inc.
- Pursuing the development of its five major titanium mineral sand deposits in Kenya.
- America Mineral Fields
- Engaged in the acquisition, exploration, and redevelopment of metal producing properties.
- PT Timah plc
- Producer of tin, gold, coal, diamond and associated base-metals in Indonesia, South East Asia, South America, and Africa.
- Consolidated Callinan Flin Flon Mines Ltd.
- Canmine Resources Corporation
- Mining and exploration company.
- North American Tungsten
- Montana Resources, Inc
- In partnership with ASARCO. Operates an open pit mine which primarily contains porphyry copper with a molybdenum byproduct.
- Twigg Minerals plc
- Gold and base metal exploration, with interests in Tanzania and Mozambique.
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