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More Mining Engineering Questions
Maximum number of faces possible in a 6 heading B & P district is
The ratio between power output to power input called . . . . . . . .
It is a good practice the air velocity not be exceed . . . . . . . . m/sec at the face.
In which mining gives high output per man shift.
The instrument to determine the distance travelled by air in a given time is . . . . . . . .