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Publication of CA22293ApublicationCriticalpatent/CA22293A/fr
Procede de traitement de l'oxide magnetique des minerais et sables de fer pour en produire directement des barres de fer ou d'acier malleable ouforgeable
Improvements in the Treatment of Copper Ores or Minerals for the Obtainment of Copper and other Metals therefrom and the Recovery and Treatment of Bye-products of the Process.