What is the primary function of a portal in mining?
A. Explosive storage
B. Shaft lining
C. Surface entry to an adit
D. Water drainage
Answer: Option C
Solution (By Examveda Team)
Portal is the entrance to an adit or tunnel.The correct answer is: Surface entry to an aditIt connects the surface to underground workings in horizontal or inclined entries.It must be stable and often reinforced.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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