The important factors affecting gas emission are
A. nature of coal seam and adjacent strata
B. method of mining and type of coal cutting machines
C. speed and advance of face
D. ventilation arrangement and its efficiency
E. all these
Answer: Option E
This Question Belongs to Mining Engineering >> Mine Ventilation
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The mechanical mixture of gases existing in a mine given off after explosion called
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B. Stink damp
C. Black damp
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A Drager Gas Mask does not filter
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B. Nitrous fumes
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