Q298
Where the shaft exceeds 45 m in depth, the persons working at the bottom of the shaft shall be protected by a covering which shall be kept lowered within 'A' meters of the bottom of the shaft. 'A' is given by,
A.
22.5
AnswerB.
32.5
C.
42.5
D.
52.5
Answer: Option A
Solution
Answer: Option A
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