|Born||July 27, 1896
Clermont-Ferrand, Puy-de-Dôme, France
|Died||March 20, 1969 (aged 72)
Le Kremlin-Bicêtre, France
|Alma mater||École Normale Supérieure
University of Paris
Longmachon passed his Baccalaureate in Clermont-Ferrand. He served in the First World War from 1915 to 1918 and subsequently received the knighthood of the Legion of Honour. He graduated from the École Normale Supérieure and passed the agrégation in Physics in 1921. He received a PhD in Mineralogy from the University of Paris in 1925.
Longchambon became an Assistant Professor at the University of Montpellier in 1925. He was appointed as the chair of the department of Applied and Theoretical Mineralogy at the University of Lyon in 1927. He succeeded Victor Grignard as Dean of its College of Sciences in 1936.
Longchambon was Minister for Supply (French: Ministre du Ravitaillement) from January 26, 1946 to June 24, 1946 in the government of Félix Gouin, and later Secretary of State for Scientific Research and Technical Progress (French: Secrétaire d'État Recherche scientifique et Progrès technique) from June 19, 1954 to February 23, 1955 in the government of Pierre Mendès-France. He was elected at the French Senate on May 5, 1959, was reelected October 4, 1962, and remained senator until his death.
- "LONGCHAMBON Henri". Senat. Retrieved April 3, 2016.
- Dosso, Diane (2006). "Chapter 4. Henri Longchambon (1896-1969), secrétaire d'État de Pierre Mendès France". In Chatriot, Alain; Duclert, Vincent. Le gouvernement de la recherche : Histoire d'un engagement politique, de Pierre Mendès France à Charles de Gaulle (1955-1969). Paris: Editions La Découverte. pp. 62–74. ISBN 9782707148100. OCLC 70258222. Retrieved April 3, 2016 – via Cairn.info. (registration required (. ))
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