Which of the following is a disadvantage of longwall mining?
A. Low productivity
B. High ore dilution
C. High initial capital cost
D. Poor safety record
Answer: Option C
Solution (By Examveda Team)
Longwall mining is highly productive, especially for coal.The correct answer is: High initial capital costRequires expensive machinery and roof support systems.However, it offers good safety and recovery rates.This Question Belongs to Mining Engineering >> Mine Development And Mining Methods
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