Mining Engineering > GATE 2018 > Mineral Exploration
A right conical iron ore stack on level ground of height 10 m has 60% Fe. The height of the conical stack is extended up to 20 m using iron ore of 50% Fe. The angle of repose of iron ore is 38°. The mean grade of the final stack in % Fe is __________.
Explanation
Correct : 51.0
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