1. The wattage of bulb in a cluster of each bulb
2. The required water for 1 ton of sand in hydraulic sand stowing is . . . . . . . .
3. The purpose of pilot hole in stable pit drivage
4. Scaffold not required in . . . . . . . . tubbing
5. Bord and pillar method applied when a seam is
6. The following method practiced in NECL (Assam) for extraction of steep thick seam.
7. Transportation of filled material with water to the worked out areas for filling called . . . . . . . .
8. In double tube core barrel which tube is non rotating
9. The face or working place which is parallel to main cleat is called . . . . . . . .
10. With 3 or 4 stooks under extraction at a time, the total area should not exceed . . . . . . . . m2
Read More Section(Coal Mining)
Each Section contains maximum 100 MCQs question on Coal Mining. To get more questions visit other sections.