(Unknown Author) “Close to Nacozari, at Pilares, are some of the richest copper mines in the world” (1919) – One of the best examples of the development that may be looked for throughout Mexico whenever universally cordial relations between Mexican and American capital are resumed, is shown at Nacozari, 75 miles south of the Douglas, … Sigue leyendo Mineral Wealth of Mexico Shown at Nacozari