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Publication of CA20741ApublicationCriticalpatent/CA20741A/fr
CA000020741AProcede pour enlever les metaux des minerais et des produits metallurgiques, et pour separer la base des metaux precieux
ExpiredCA20741A
(fr)
Appareil pour l'extraction de l'or des matieres auriferes en poudre et pour la concentration des matieres contenant de l'or, tel que les pyrites