Coal Mining Legislation – 5

1. General electric lighting may be used on any other roadway or place not within ___ of the nearest face?

2. In a gassy mine of First or Second degree, the velocity of air at the discharge end at 7.5m out-bye shall not be less than ____

3. Where an auxiliary fan is used, the in-let air to the fan shall not contain more than____ of methane

4. All unused workings connected through walkable entrances and which are not permanently closed shall be inspected by competent person once in ___

5. Steps are to be provided on a road or footpath if the inclination exceeds ___?

6. The partition between the top and bottom airways shall be of R.C.C. not less than ___ thick?

7. No working shall be made and no work of extraction or reduction of pillars shall be made within any point ___ of any railway line or any other important surface feature.

8. A screening plant shall not be placed within a distance of ___ of a downcast shaft

9. Stone dust barriers should be provided if the percentage of inflammable gas in the general body of air is ____ or more

10. A naked fire shall not be permitted within __ from any entrance to a mine?

11. Adequate general lighting arrangement shall be provided in every travelling roadway when normally used by ____ or more persons.

12. If any analysis of inflammable gas indicates ___ the frequency of sampling shall be increased to once in 24hours

13. If the coal containing less than 30% Volatile Matter, the percentage of incombustible matter in stone dust shall be a minimum of

14. The emission rates of inflammable gases shall be checked once in

15. Dust sampling periodicity shall be once in every ____

16. For the coal containing more than 30% Volatile Matter, the percentage of incombustible matter in stone dust shall be a minimum of ____

17. The diameter of the hole drilled for roof bolting shall be at least ____ mm more than bolt dia?

18. Any working or gallery shall be advanced to a distance of more than 4.5 m from the nearest ventilation connection, unless the current of air reaches up to a point within ___ of the face

19. The white washing of the face; the roof and sides shall be done up to within ___ meters of advancing face.

20. The provisions of Systematic Supporting Rules shall apply to any development working within ___ of face and every junction of roadways

21. The width of a footpath shall not be less than ____

22. The working face, its floor, roof and sides of every roadway and also the approaching gallery up to a distance of ____ shall be wetted during work shifts, unless they are naturally wet

23. No person shall work or be permitted to work at any place having an inclination more than ____

24. All surface structures and supports within a horizontal distance of ____ from all entrances to a mine shall be of fire proof material?

25. In the gradient of a working is more than ____ from the horizontal precautions shall be taken to prevent danger of persons from falling?

26. The air samples shall be analyzed within ____ of the collection of samples

27. A place shall be called as harmful if the dust concentration exceeds ___ mg/cu.m

28. All results of analysis of airborne dust samples shall be systematically recorded within ____ of date of collection of samples?

29. Where any working is approaching within ____ of an old goaf or disused working, that is likely to contain an accumulation of inflammable gas a borehole of not less than 1.5 m deep shall be drilled in advance of the working

30. The base plate/ piece placed below a prop when set on weak floor, shall have at least ___ thickness

31. The dust sample collected shall be sent to laboratory within ____ of collecting sample?

32. The percentage of methane in the return air of any heading ventilated by an auxiliary fan shall not exceed ____

33. The masonry or brickwork stopping constructed between the main intake and main return airway shall be of at least ___ thick

34. In a Third degree gassy mine, the velocity of the air at maximum span of the long wall face shall be not be less than ____

35. The minimum length of a cogging member (Chalk) shall be at least ____ in length?

36. The mine air shall be tested for percentage of CO once in at least ____

37. An area can be called as naturally wet if the moisture % is at least ____

38. No narrow advance gallery shall be driven more than ___ ahead of the widened gallery?

39. The maximum permissible gradient to carry any head load along a road or footpath is

40. Every mechanical ventilator shall be installed on the surface at a distance of not less than ___ from the opening of the shaft or incline at any point?