True giants of mining: World's top 10 iron ore mines | MININGSep 17, 2015 . Vale's Carajas Mine Complex is the second biggest iron ore production center, which consists of three open-pit mines, namely Carajas N4E,.how to operate an iron ore mine,Iron Ore and Pellets - ValeVale is the world's leading producer of iron ore and pellets. . Where? Our mines are concentrated in Brazil, where we also operate pelletizing plants. In addition.
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