Person ? L. Thiriez
- From 1903-01-01 to 1903-12-31, Administrateur of Compagnie de Béthune
- From 1908-01-01 to 1908-12-31, Administrateur of Compagnie de Béthune
- From 1912-01-01 to 1912-12-31, Administrateur of Compagnie de Béthune
- From 1917-01-01 to 1917-12-31, Administrateur of Compagnie de Béthune
- From 1923-01-01 to 1923-12-31, Administrateur of Compagnie de Béthune
- From 1923-01-01 to 1927-12-31, Administrateur of MINES DE KALI SAINTE-THERESE
- From 1927-01-01 to 1927-12-31, Administrateur of Compagnie de Béthune
- From 1933-01-01 to 1933-12-31, Administrateur of Compagnie de Béthune
- From 1940-01-01 to 1945-12-31, Administrateur of MINES DE KALI SAINTE-THERESE