Question:
In any underground coal mine which of the following occurs first?
In any underground coal mine which of the following occurs first?
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Local falls precede periodic and main falls in underground coal mines.
Updated On: May 28, 2025
- Main fall
- Periodic fall
- Local fall
- Air blast
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The Correct Option is C
Solution and Explanation
Local falls occur first in coal mines, usually due to roof rock instability near workings before larger scale periodic or main falls.
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