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More Mining Engineering Questions
Extraction of coal by caving system may be permitted upto a thickness of . . . . . . . . m only.
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The pressure measuring instrument used in certain types of ventilation surveys is
The extensive lava-flows giving rise to flat-topped mountains and plateaus is known as
In a longwall panel, the main gate road is 1000 m long, 4.5 m wide and 2 m high. The gate road is to be used for airflow at the rate of 17 m 3 /s. Considering a coefficient of resistance of airways of 0.01, the pressure in Pa required to maintain the airflow in the gate road is