Carlos Ruiz Sacristan

Carlos Ruiz Sacristan became a director in 2007. He is a partner of Proyectos Estrategicos Integrales, a Mexican developing and financing company that provides comprehensive financial advisory and investment banking services to the private and public. sectors, mainly in energy, infrastructure, transportation and communications. He is also a director of Southern Copper Corporation (an integrated copper producer in Peru and Mexico), ASARCO LLC (an integrated copper producer in the United States), Banco Ve Por Mas (a Mexican banking corporation) and Constructora y Perforadora La Latina (a Mexican geothermal exploration and drilling company).