French Federation of Speleology 10 years, named the "Bulletin of the CNS". Simultaneously, the SSF ceased publication of its periodical bulletin to provide its official information bulletin in the new "CNS". From 1952, cave training courses were organised in partnership with the Ministry of Youth Affairs and Sports. From 1953, Guy Lavaur organised cave diving activities. In conjunction with the Fédération nationale de sauvetage (National Rescue Federation), a certificate of first degree fitness was created in 1954. The first International Congress of Speleology was held in Paris from 7–12 September 1953 under the patronage of the Minister of National Education, as well as the
French Federation of Speleology Minister for Youth Affairs and Sports. This dual sponsorship was intended to mark the recognition of both scientific and recreational caving. The conference consisted of seven sections of work: hydrogeology and karst morphology, physical chemistry, meteorology and crystallography, biology, human habitat, surveying and topography, photo and film and equipment and techniques of exploration. More than one hundred papers and a dozen films were presented. In 1957, an amendment was made to the constitution of the CNS making it an association of clubs (not club presidents), to the exclusion of individual members. The financial situation became extremely difficult, firstly because of