31. In connection with blasting, misfire means-
32. Hydraulic fluid which is not . . . . . . . . shall not be used below grow.
33. The percentage of inflammable gas does not exceed . . . . . . . . in the general body of the return air of any ventilating district and . . . . . . . . in any place in the mine.
34. A competent person shall inspect the top of all entrances of a mine once at least in every . . . . . . . . days.
35. Conditions for conduct of blasting in fire area in opencast mines shall be specified by the . . . . . . . . in general order.
36. For fixing the bars on the sides of the road way in holes atleast . . . . . . . . centimeters deep made in sides of the roadway.
37. Act shall not apply to any opencast mine engaged in the extraction of Kankar, morrum, gravel, boulder, ordinary sand, ordinary clay, limestone where the number of persons employed on anyone day does exceed 'N' number. 'N' is given by
38. Identify the department from which workmen's Inspector is not considered?
39. Who is appointed as the chairman of the 'committee' made under the section 12 of Mines Act 1952 to consider the proposal for making rules & regulation under the Act
40. 'General body of air' means the general atmosphere in a seam but does not include
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