Mining Engineering > GATE 2020 > Mineral Exploration
A bauxite ore body has four boreholes as shown below. For each borehole, the grade of alumina, the thickness of the ore body, and the triangular area of influence are as shown.
The average grade of ore body in the region ABCD in percentage is (round off to 1 decimal place).
Explanation
Correct : 30.8
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