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  1. Paris (2021 population, 14,956) is a community located in the County of Brant, Ontario, Canada. It lies just northwest from the city of Brantford at the spot where the Nith River empties into the Grand River. Paris was voted "the Prettiest Little Town in Canada" by Harrowsmith Magazine. The town was established in 1850.

  2. en.wikipedia.org › wiki › GypsumGypsum - Wikipedia

    Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO 4 ·2H 2 O. It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard or sidewalk chalk, and drywall.

  3. Sommaire déplacer vers la barre latérale masquer Début 1 Fabrication du plâtre Afficher / masquer la sous-section Fabrication du plâtre 1.1 Exploitation des mines de gypse (pierre à plâtre) 1.2 Résumé de sa fabrication industrielle, avec l'étape-clef: la cuisson ou calcination 1.2.1 Cas du plâtre de récupération 2 Conservation et test Afficher / masquer la sous-section ...

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