Bulletin of the Institution of Mining and Metallurgy,, 1957 December

Bulletin of the Institution of Mining and Metallurgy,, 1957 December, Box: 263, Folder: 4. Saint John d'El Rey Mining Company Records, 1984-12. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/346060 Accessed September 27, 2026.