Coal Mining Legislation – 15

1. Persons shall not be employed when the parting between the working and an overlying seam on fire where the thickness of hard rock parting is less than.

2. During increased % of inflammable gases the sampling that is done once in 24 hours shows the % of gas less than 0.8% it is sufficient to carry out the sampling once in ____

3. In every mine where a mechanical ventilator is in use, the quantity of air shall be measured once in ___ days.

4. For any underground mine, air samples and temperature readings shall be taken at least once in ------

5. When there is fire in a higher seam or any place where there is spontaneous heating, the minimum distance of safety to be maintained by not employing persons is

6. In a mine of 2nd or 3rd degree the samples collected shall be analysed within ___ days

7. The weighted average concentration of airborne respirable dust in milligrams per cubic meter of air sampled in the case of Manganese shall not exceed.

8. The dust sampling frequency is once in every --------------months.

9. The samples are to be taken essentially at the

10. If the dust concentration measured in any place in the mine approaches seventy five percent of the allowable concentration the periodicity of the dust sampling should be.

11. The details of inspection with signature for every stopping that is made by competent person shall be maintained on the board for a period of not less than ---

12. The instrument that is used for collection of samples shall be calibrated on a date which is not earlier than ___ from the date of sampling

13. For every fiery seam or gassy seam of the second or third degree

14. To assess the atmospheric condition behind the stopping’s built to sealed off the area of old workings or such goaf or a fire or spontaneous heating, arrangements to ascertain the conditions behind the stopping are to be done once in.

15. When a working or gallery is to be extended it shall be ensured that air is directed to the face from a distance of not less than ___ meters from the face.

16. When a new mechanical ventilator is installed, Standing Orders on evacuation of persons during stoppage of the fan are to be formed within ____ days of the installation,

17. Where the mine is indicative of dangerous levels of inflammables, the lights have to be illuminated from any external source. This lighting shall be limited up to a distance of

18. While a booster fan is installed, a notice along with the survey results is to be sent to Regional inspector for permission. If a booster fan is shifted from one place to other place instead of new installation, the following shall be applicable.

19. During air sampling if any determination shows the percentage of inflammable gas more than 0.8% further determinations shall be made once in ___ until the value comes down below 0.8%, along with steps being taken for reduction of the %.

20. Underground re-lighting stations are to be located in

21. If the measured dust concentration of any place shows excess fifty percent concentration of the allowable concentration the periodicity of the dust sampling shall be once in.

22. If a mine is stopped or discontinued for a period of ___ days or dewatered it should be inspected by competent person with suitable safety lamps and torches.

23. Main mechanical ventilator of a mine shall be installed on the surface at a distance of not less than ___ meters from the opening of the shaft or incline.

24. The result of measurements of airborne dust and other relevant particulars shall be recorded within -------days of sampling

25. A place is considered to be having inflammable gas when the methane % is

26. When a ventilation door or some other ventilation stopper is used, the space between the door and the walls + roof shall be filled with concrete wall not less than ---------------in thickness.

27. Every safety lamp is to be thoroughly checked by a manager, assistant manager, underground manager or a competent person and the result be entered in the book once in ____.

28. Inspection of all stoppings erected to isolate or control a fire or spontaneous heating belowground shall be done once in at least in every

29. In an underground dust sampling, distance at which the sampler shall be positioned on the return side of the point of dust generation is.

30. During sampling if the percentage of inflammable gas exceeds ___ % the frequency of determinations shall be made every 24 hours.

31. The travel of intake air shall be such,

32. In a non-fiery seam or a first degree mine air measurements can be taken once in every -------

33. When any booster fan is installed the notice along with the survey details done are to be sent to Regional inspector ___ days before such installation.

34. When a narrow advance gallery is to be driven in continuation to already existing main gallery, it shall not extend beyond __ meters ahead of main gallery.

35. In a second or third degree mine, where un-used workings that are not sealed off exist, the Regional inspector may require regular inspection once in __ days

36. When any alteration is made in the system of ventilation determination of % of inflammable gases in the air shall be made within ____ hours of such alteration.

37. The gallery of working areas shall be white washed up to a distance of ___ meters from the gallery

38. A place is to be considered to be having inflammable gas when

39. The inspection to be done to assess the atmospheric condition behind the stopping’s built to sealed off the area of old workings or such goaf or a fire or spontaneous heating once in Thirty days need not be done under the condition

40. The weighted average concentration of airborne respirable dust in milligrams per cubic meter of air shall not exceed the value arrived by dividing ------ with the percentage of free respirable silica present.