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Mining Engineering · Q214

Mine Development and Mining Methods

Engineering and GATE · Mining Engineering · question 214

Q214

What defines a "shaft collar" in mine development?

A.
Entry-level training
B.
Shaft entrance reinforcement
Answer
C.
Ore chute part
D.
Emergency ladder

Answer: Option B

Solution

Answer: Option B
Solution:
Shaft collar is the reinforced concrete or steel structure at shaft top.The correct answer is: Shaft entrance reinforcementProvides stability and structure for surface installations.Protects against soil collapse.