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Folio, 33cm. Pp. 183, 6 photogr. plates (incl. frontisp.), 8 large fold. plans, maps, and sections, 10 figs. New cloth, orig. printed front cover laid down. Small repair to blank margin of first few pages and one map, very good otherwise. - Rare monograph. Chapter headings: Reseña historica. Fisiografá de la Sierra de Pachuca. Geología general de la Sierra de Pachuca. Las Vetas. Sistema de fracturas. Descripción de las rocas. Exploración de las minas. Maquinaria de desagüe. Metalurgia. - The mining that Pachuca is famous for began in the mid-16th century, during Spanish colonial rule. It remained a major mining center until the mid-20th century.

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