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
B. 32.5
C. 42.5
D. 52.5
Answer: Option A
This Question Belongs to Mining Engineering >> Mine Legislation And General Safety
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