From 1947, during the four mandates of Mayor Louis Sallenave, the town of Pau experienced strong growth. In 1957, exploitation of the Lacq gas field, discovered in 1951, gave new momentum to the region with the industrial development of Béarn and the Lacq area (SNPA, EDF, Pechiney and Rhône-Poulenc being the most important employers), the population of the town doubled in 20 years. Major infrastructure projects were carried out, such as the construction of several schools representing more than 100 classes, creation of the Pau-Uzein airport in 1955 (now the Pau Pyrénées Airport) to modernise the old Pau-Pont-Long airfield (in the commune of Lescar), creation of social housing (all of the "Ousse des Bois" in 1961, and Dufau Terrace from 1962), creation of the exhibition centre, the University of Pau and Pays de l'Adour and construction of a second bridge over the River Gave in Jurançon. A vast town planning scheme allowed the extension of the commune to the north through the "coulée verte" corridor. The configuration of the city shortly moved from the end of the 1960s. The fame and prestige of the city increased thanks to the conference of the Indochinese States from June to November 1950, visits of Heads of State such as president Charles de Gaulle in February 1959 and the first Secretary of the Soviet Union, Nikita Khrushchev, travelling in Lacq in 1960.