Person ? E.-S. Birkenruth
- From 1912-01-01 to 1912-12-31, Administrateur of THE GIANT MINES OF RHODESIA LIMITED
- From 1912-01-01 to 1927-12-31, Administrateur of CONSOLIDATED GOLDFIELDS OF SOUTH AFRICA Ltd
- From 1912-01-01 to 1927-12-31, Administrateur of South African Gold Trust, Ld
- From 1927-01-01 to 1927-12-31, Administrateur of SOCIETE ANONYME DES MINES DES BORMETTES