Coal Mining Legislation – 6

1. When the cage is at the bottom of the shaft, the maximum permissible gap (both vertical and horizontal) between the protective roofing and the top of the cage is ___

2. If the depth of the shaft is 1000 meters, then the maximum permissible speed of cage during man winding is ____ m/sec?

3. When any investigation of an area, or local knowledge indicates the existence of unconsolidated surface deposit with the boundary of mine or within _ the same shall be depicted on the geological plan

4. If the monthly output of the mine is 35000 tons, the number of surveyors required as per statute is?

5. If any ladder is fixed in a shaft, it shall not have an inclination of not more than ___ from the horizontal?

6. The plans shall show all features both above and below ground of all adjacent mines as are situated within ___ of horizontal plane

7. Every shaft in the course being sunk shall be provided with a permanent lining of steel rings which shall at no time be more than ___ from the bottom of shaft?

8. Where the shaft is more than ___ in depth the arrangements for persons to descend and ascend is to be done by mechanical means?

9. Generally in coal seams having inclination of more than ____ the pillars develop internal torque, due to vertical and horizontal forces?

10. The floor area available per person in a shaft shall be at least ___ Sq. meters

11. Combined plans shall be maintained in respect of all seams separately which are lying within ____ of each other and working in different seams and all sections shall be shown in different colors?

12. During every year a manager shall submit Chief Inspector, up to date copies of the plans on or before ___ (CHANGED)

13. The plans shall be drawn with a contour interval not exceeding _____

14. Where it is not possible to show the complete boundary of leasehold on the same plan; an additional KEY PLAN having scale ___ shall be shown?

15. In code of signaling for raising the cage is by giving

16. Shafts and outlets shall not be less than _____ distance from each another at any point

17. A detaching hook shall be provided for each bucket if the shaft exceeds ____ in depth

18. When the cage is at its lowest position, the minimum number of turns that the winding drum should contain is____

19. When a working approaches within ___ meters of any water body, a warning line shall be shown in the plan

20. If the depth of the shaft in 500 meters, then the maximum permissible of the cage during man winding is ____ m/sec?

21. Every shaft or incline shall be examined once in at least _____

22. The stress created by an opening extend up to a distance which is about ___ times the height of the opening?

23. The descending cage when landing at the pit bottom shall not exceed a speed of landing of ___ m sec?

24. The RF of the dust plan is?

25. The convergence of roof per meter span should not exceed ___ mm in case of coal or shale roof?

26. The maximum speed of the rope in man winding in case of deep shafts shall not exceed

27. If the depth of the shaft is 400 m then the maximum speed of the cage in shaft sinking is _____ m/sec?

28. The spot levels recorded and depicted on the plans shall not be more than ____ apart

29. If the depth of a second outlet is more than __ suitable cage shall be provided for ascending and descending of persons?

30. When any working approaches within ___ meters of any water body a statutory restriction line shall be depicted on the plan

31. Where direct engine is used, and when the cage is at its normal position at the top of the shaft, the maximum permissible space between detaching book and the detaching bell is ___

32. The gap between the floor of the cage and the lowest part and fence shall not exceed ___

33. The gap between any two members of the gate shall not exceed ___

34. An independent means of signaling is to be provided when the winding depth is equal to or more than ____

35. The RF of the water danger plan is?

36. Automatic contravenes test and brake examination shall be conducted once in at least every __

37. Where geared engine is used, and when the cage is at its normal position at the top of the shaft, the maximum permissible space between detaching book and the detaching bell is ___

38. Every shaft in the course of being sunk shall be provided with the permanent lining of the metal; concrete which shall at no time be placed at a height of more than ___ form the bottom of the shaft

39. In shafts of more than ____ depth, over wind switch shall be provided

40. When it is intended to bring into use any new man-winding installation, a notice is to be given to Regional Inspector not less than ___ before such installation is put to use