Who was Roger Jost?
Roger Jost is an important figure in both the museum's and the Schlumberger company history: he was the first curator of the former and the longest-dating career in the latter (48 years)
Roger Jost was hired in 1924 by Conrad Schlumberger, following a recommendation from his uncle, Georges Dubois, who was steward at the Val-Richer family estate (in the village of Saint-Ouen-le-Pin, in Calvados). At the age of 17, he became the youngest prospector for the Société de Prospection Électrique, referred to as the "Pros".
He took surface measurements in Romania then in Tunisia. On the 5th of September 1927, in Pechelbronn, he assisted Henri Georges Doll, along with Charles Scheibli, on what was to be a world's first: measurements taken inside an oil well.
He worked in the USSR from 1929 to 1934. As an instructor, he then resumed his missions throughout Europe (Austria, Poland, Hungary, Serbia, Germany). From 1943 to 1947, he was provided "on loan" by Marcel Schlumberger to the Compagnie Générale de Géophysique for surface prospecting in France, then in Tunisia. On his return to France, he was placed in charge of the Pau site, before being transferred to Paris in 1956, where he managed equipment and dealt with the difficulties encountered by engineers out in the field.
Shortly before retiring in 1971, Roger Jost was entrusted by Madame Jeanne Schlumberger, Marcel's wife, with the mission of compiling the collection presently exhibited in Crèvecœur Castle, the site chosen for the company's future museum. He therefore became the Schlumberger Museum's very first curator.