Alberto Barrenechea Guimón

Metorex Ltd. engages in acquiring, developing, and managing a portfolio of base metal resource projects. It produces and supplies copper and cobalt to industrial economies. The firm’s projects include Musonoi Est (Dilala East), Kinsenda and Lubembe. Its operating assets include Ruashi and Chibuluma. The company was founded in 1934 and is headquartered in Johannesburg, South Africa.

Derivados del Flúor SA offers its customers long experience in the manufacture of inorganic fluorinated products, state-of-the-art technology, capacity, flexibility and an experienced workforce adapted to the ever-increasing globalised new market-driven trends. They also offer a greater integration with its customers in order to exactly meet their needs. The company was established in 1947 and is headquartered in Cantabria, Spain.

Part of Minerales y Productos Derivados SA, Mercados Mundiales Import Export SA engages in trading of coal and mineral ores. The company is based in Castro Urdiales, Spain.

Sepiol mines and processes clay mineral such as sepiolite, bentonite, and attapulgite, and with them manufactures products including absorbents, animal feed additives, and cat litter. The firm was founded in 1986, and is based in Azuqueca de Henares, Guadalajara.

Part of Minerales y Productos Derivados SA, Sulquisa SA is a Spanish company that manufactures and commercializes sodium sulphate. The company is based in Bilbao, Spain.

Vergenoeg Mining Co. Pty Ltd. produces and distributes fluorspar mineral. The company was founded on December 15, 1951 and is headquartered in Rust de Winter, South Africa.

FAMI-cuatro de Inversiones operates as an investment company. The firm is based in Boadilla del Monte, Spain