Person ? Hippolyte Duvergey
- From 1916-01-01 to 1916-12-31, Commissaire des comptes of COMPAGNIE MINIERE "LAS DOS ESTRELLAS"
- From 1917-01-01 to 1933-12-31, Administrateur of COMPAGNIE MINIERE "LAS DOS ESTRELLAS"
- From 1928-01-01 to 1937-12-31, Vice-Président of Cie MINIERE DE L'OUBANGHI ORIENTAL (C. M. O. O.)
- From 1933-01-01 to 1933-12-31, Administrateur of ESTRELLAS MINING AND FINANCE CORPORATION LIMITED