www.maptek.com CASE STUDY United Taconite, one of the Cliffs-operated mines on the Mesabi Iron Range, mines taconite, a low grade form of iron ore con- taining approximately 27-35% magnetite. Using crushing, grinding, magnetic separation, and agglomeration techniques, a 60% iron pellet is produced. Contracts with the steel mills set the quality standards of the pellet composition. Maptek Vulcan™ mine planning software has been used at Uni

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