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Aged 26, he opened the French Petrifying Fountain

Jean Serre (1795-1869), a former checker of Weights and Measures fascinated by science, helped by his father Gilbert Serre, built in 1814 the first petrifying ladders and founded in 1821 the site of Fontaines Pétrifiantes de Saint-Nectaire. In 1844 Jean Serre showed his productions at the Paris Fair for French industrial products, World Fair to-be. The petrification industry employed then more than 60 workers.