What is "overbreak" in development blasting?
A. Excess ventilation
B. Incomplete fragmentation
C. Rock breaking beyond design limit
D. Misaligned tunnel
Answer: Option C
Solution (By Examveda Team)
Overbreak is unintended excavation beyond the desired perimeter.The correct answer is: Rock breaking beyond design limitCauses extra ground support cost and volume loss.Controlled with precise blasting.This Question Belongs to Mining Engineering >> Mine Development And Mining Methods
Related Questions on Mine Development and Mining Methods
What is the primary purpose of mine development?
A. Extraction of ore
B. Ventilation planning
C. Accessing ore body
D. Waste disposal
A. Shaft
B. Adit
C. Stope
D. Raise
A. Room and Pillar
B. Cut and Fill
C. Block Caving
D. Shrinkage Stoping
Which of the following is not an underground mining method?
A. Open-pit mining
B. Shrinkage stoping
C. Sublevel stoping
D. Cut and fill
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