Person ? Guillermo Brockmann
- From 1912-01-01 to 1912-12-31, Administrateur of COMPANIA MINERA NAZARENO Y ANEXAS, S. A.
- From 1912-01-01 to 1912-12-31, Administrateur of COMPAGNIE MINIERE "LAS DOS ESTRELLAS"
- From 1917-01-01 to 1917-12-31, Administrateur of SOCIETE D'AFFINAGE DE MÉTAUX
- From 1917-01-01 to 1917-12-31, Administrateur of COMPANIA DE MINAS LA BLANCA Y ANEXAS