By H. B. Layton A mountain of copper ore to be turned into gold by modern facilities—The Pilares mine, owned by Phelps, Dodge & Co. is reckoned as the greatest in America. (1900) – The colossal copper mining and milling enterprise of Phelps, Dodge & Co. of New York at the near Placeritos de Nacozari, … Sigue leyendo Work Accomplished by the Moctezuma Copper Company at Nacozari, Sonora (1900)