Person ^? J. M. Rios Arias

• From 1923-01-01 to 1927-12-31, Administrateur of Compania Huanchaca de Bolivia
• From 1933-01-01 to 1933-12-31, Administrateur of Compania Huanchaca de Bolivia
• From 1940-01-01 to 1945-12-31, Vice-Président of Compania Huanchaca de Bolivia