Select the correct option to test your answer:
More Mining Engineering Questions
If the depillaring proceeding from dip to rise and seam inclination is not mild so that goaf canbe submerged in water then the line of goaf is
The space between the frame of every ventilation door and roof and sides of the roadway shall be built up with masonary or concert not less than . . . . . . . . centimeter thickness.
The method of drop raising is an improvement over the method of raising through . . . . . . . .
Any spoil bank exceeding . . . . . . . . meters in height shall be benched. So that no bench exceeds . . . . . . . . meters in height and the over all slope shall not exceed 1 vertical to . . . . . . . . horizontal.
In cage winding the ratio of pay load/gross load of cage is . . . . . . . .