An ore block of length 30m and height 20m having an average width of 1.5m with sharp boundary walls is mined with a minimum mining width of 2m. If the tonnage factors are 3 t/m3 for ore, 2 t/m3 for wall rock and average grade of ore is 10%, the diluted grade of ore mined in percent is
A. 7.5
B. 7.84
C. 8.18
D. 8.52
Answer: Option C
This Question Belongs to Mining Engineering >> Introduction To Mining Engineering
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