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From surface to underground mining
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Following Jean-Étienne Astier's first steps in ocher mining at the end of the 18th century, more than one hundred quarries and twenty-five factories opened in the Pays d'Apt during the 19th century. The ochres were mined in the open air in the municipalities of Gargas, Gignac, Mormoiron, Roussillon, Rustrel, Saint-Pantaléon, Villars and Villes-sur-Auzon and, from 1875, underground extraction made it possible to double the production.
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