 Between 1959 and 1963, Jacques Cholet, a Parisian engineer, conducted several digs in the church, failing to discover anything noteworthy.In November 1956, Monsieur Cotte of the "Société des arts et des sciences de Carcassonne" asked the membership during its monthly session about the treasure of Rennes-le-Château, which led to an investigation of the subject.Two members conducted on-the-spot research in March 1957 that lasted one year.