The value of ore is Rs. 600 per ton, production cost Rs. 400 per ton and cost of over burden removal is Rs. 50 per m3, the break even stripping ratio in m3/ton is
A. 4 : 1
B. 1 : 3
C. 3 : 1
D. 1 : 4
Answer: Option B
This Question Belongs to Mining Engineering >> Opencast Mining
(600-400)/50=4/1
ans 4:1