Coal Mining Legislation – 1

1. When doing a blasting underground the area of blasting, all accessible places including roof and sides within a distance of -----------------should be stone dusted, unless such places are naturally wet.

2. If blasting is done with delay detonators with at least -----------Milli second delay the aggregate charge of 2kg per delay can be used.

3. When Calcium carbide is to be used underground the maximum weight that can be taken below ground for usage is not more than --------.

4. The protective footwear shall be supplied free of charge, at intervals not exceeding-------

5. When the shots are fired in non-electrically, the time after which the blasting area can be entered is.

6. The air pressure that a compressor gauge shows indicates

7. Every fence on the surface shall be inspected once in

8. If the shots are fired electrically, the time after which the persons can enter the blasting area is.

9. If an appeal is to be made by any appellant to the committee it shall be done within __ days of the receipt of the order by the appellant

10. Before an air compressor is put to use it should be subjected to a hydraulic test at a pressure of ___ times the working pressure

11. A relieving hole shall be drilled from the misfire hole at a distance of at least ----- meters away throughout the depth of the relieving hole.

12. Where the Chief Inspector or the said Inspector fails to inspect the place of accident within___ the area of accident can be disturbed after taking authenticated sketch of the area and photographs.

13. A copy of the manpower plan has to be available with

14. The manger shall fix, from time to time, the maximum number of shots that a shot-firer may fire in any one shift and shall not in any case exceed the number of shots that that a shotfirer can fire in a gassy seam of second or third degree or a fiery seam is

15. The periodicity of conducting hydraulic test is once in ___

16. Drill hole diameter shall be such that there will be a clearance of ___ cm between the explosive cartridge and wall.

17. The competent persons meant for inspection of all machinery and plant shall inspect once in ___

18. The minimum length of fuse that is to be used during blasting a Shot-hole is.

19. The danger zone is the area falling within a radius of -------------------------------from the place of firing (danger zone) and persons within this area shall take proper shelter.(Changed)

20. The aggregate maximum charge in all the holes fired at one time shall not exceed------.

21. The manager shall submit a copy of emergency plan to the regional inspector, within ___ days of opening or re-opening of the mine.

22. While using permitted explosives, the drill-hole depth in relation to undercut, overcut or side cut shall be ---

23. In case some 1st degree mine is classified as second or third degree gassy mine, the Central Government or the Chief Inspector or an Inspector can conditionally permit usage of non-flame proof apparatus that is already under use as per 1st degree gassy standards, for a period, not exceeding--------------

24. When two working places belowground have approached within___distance to each other all persons have to be withdrawn from both working places before blasting

25. If an appeal is to be made to Chief Inspector against an order made by the Regional Inspector, it should be submitted within ___ days along with the order received by the appellant.

26. The cable used for blasting shall have a length of minimum

27. Every blasting apparatus shall be cleaned and overhauled by a competent person once in.

28. In a non-gassy seam the number of shots with single shot exploder and multi shot exploder is respectively

29. Where the wet bulb temperature exceeds ------- degrees centigrade arrangements are to be made to ventilate the same with a current of air moving at a speed of not less than one meter per second

30. In a stone drift after shots have been fired, all loose rock within ___ meters from face shall be removed from the face, cleaned or washed with water and examined for the presence of misfires or sockets.

31. The number of shots that are fired in opencast mines is

32. An official of a mine shall be literate and

33. Before charging shot-holes, and before firing test for inflammable gas has to be tested for in and around a radius of ___ meters of the place of firing.

34. A manpower distribution plan has to be prepared in every mine during

35. No blasting shall be if the shortest distance from the place of firing to any part of such building or structure is less than --------irrespective of the amount of the charge.

36. If the explosive is Non-Permitted Explosive it can be used in

37. In the case of a misfire which of the following statements is not correct,

38. Except in a stone drift or a sinking shaft, not more than__ holes shall be fired in any one round if initiation is non-electrical and not more than____ if initiation is done electrically.

39. While blasting in gassy mines the following shall not be done

40. When any repair or modification is done on a compressor the following action is to be taken