Q249
Which drilling pattern is used in shaft sinking?
A.
V-cut
B.
Fan cut
C.
Burn cut
AnswerD.
Ring pattern
Answer: Option C
Solution
Answer: Option C
Solution:
Burn cut is commonly used in shaft sinking.The correct answer is: Burn cutCentral holes are left uncharged to create a void.Allows other holes to break into the void efficiently.