production of alumina from bauxite ore in costarica
production of alumina from bauxite ore in costarica. ALCOA has a long history of relations with Costa Rica In 1971 ALCOA began operation for the production and export of bauxite ore in the southeastern zone of San Isidro del General ALCOA received a 20year contract to mine bauxite from a multithousand acre ore reserve area...We are a professional mining machinery manufacturer, the main ...