Access to Mineral Diposits

1. The minimum pillar to pillar distance if the depth of seam is 250m and gallery width is 4.8m?

2. The mode of entry shall be by shaft if the coal seam lying depth is more than by minimum.....m?

3. The % of extraction if the depth of seam is 300m and gallery width is 4.2m?

4. A landing or platform in a shaft including an excavation between top and bottom of the shaft is called?

5. The % of extraction if the depth of seam is 200m and gallery width is 4.8m?

6. Capacity of slusher is ..tph?

7. The max length of the trailing cable is .....m?

8. As per Indian standards, steep mines means having seam dip (in deg)?

9. A gallery which cuts across the pillars due to its drivage along an apparent dip is called..?

10. The minimum pillar to pillar distance if the depth of seam is 450m and gallery width is 4.8m?

11. As per Indian standards, thick seam means having seam thickness..?

12. The max width of the gallery in Indian coal mines is ....?

13. The travelling road height should not be less than...?

14. As per Indian standards, deep mines means if the seam lying depth from surface is..?

15. In deg I mines the % of inflammable gas is..?

16. An underground roadway through stone connecting 2 or more coal seams is..?

17. The usual inclination for the inclines is..?

18. For a coal seam of moderate deep the shaft may be located in the .... of the property?