The metra potential method (MPM) (Méthode des potentiels Métra) was developed by French researcher Bernard Roy in 1958 for the construction of the French paquebot France and of the first French nuclear power plant.
The Massilia Deputies, a rump of 27 Assembly members, including Diouf, Édouard Daladier, Georges Mandel, Jean Zay, and Pierre Mendès-France, boarded the Massilia, a ship chartered to transport Assembly members to Casablanca, where they planned to set up a government in exile.