Person ? Léon Donnet
- From 1912-01-01 to 1912-12-31, Administrateur of HUELVA COPPER AND SULPHUR MINES LTED
- From 1912-01-01 to 1923-12-31, Administrateur of SOCIETÉ DES PLANTATIONS DE CAOUTCHOUC DE KALITENGAH
- From 1912-01-01 to 1927-12-31, Administrateur of PLANTATIONS DE CAOUTCHOUC DE SUMATRA
- From 1917-01-01 to 1927-12-31, Administrateur of PLANTATIONS DE CAOUTCHOUC DE TAPANOELIE