In an opencast mine shown in the figure below, the coal has a density of 1.4 t/m3. Assuming mining operation started from plane XY, the operating stripping ratio under the given conditions in m3/t is
A. 2.32
B. 2.47
C. 2.56
D. 2.64
Answer: Option C
This Question Belongs to Mining Engineering >> Introduction To Mining Engineering
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