In 1781 he became director of the smelting works of Servoz, responsible for the mineral and metallurgical operations. In 1787, he was the first tourist to cross the Col du Géant, the mountain saddle between the Tour Ronde and the Dent du Géant, from Chamonix in the Arve Valley to Courmayeur in Val d'Aosta. Since the same year he manufactured and sold relief maps of the Mont-Blanc Massif and the Saint-Gotthard Massif.