Voici l’article gratuit de la semaine. Retrouvez les autres nouvelles de la semaine dans notre Revue. Bonne lecture ! Chrome, nickel, cobalt, cuivre. La région du Cercle de feu, qui couvre 5000 km2 dans le nord de l’Ontario, regorge (est remplie) de minéraux critiques. Ce sont des matières très recherchées, car elles sont notamment nécessaires…
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