The height of any bench in coal shall not exceed . . . . . . . . the breadth there of shall not be less than the . . . . . . . .
A. 3 m, height
B. 2 m, toe
C. 3.5 m, floor
D. 3.8 m, subgrade drilling
Answer: Option A
This Question Belongs to Mining Engineering >> Coal Mining Regulation In India
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