31. Escaped water from weep holes collected in . . . . . . . . at the curbs.
32. The purpose of shaft centering arrangement on top of sinking pit
33. The advantages of using alluminium rods
34. The depillary operations so planned and conducted that
35. The chemicals employed in presilicatisation
36. Mild steel pipes have a tensile strength of
37. Hangers diameter are
38. Fastest raising is
39. A coal bed with a methane content is greater than . . . . . . . . m3/te. has been considered coal and gas out burst prone.
40. Sillicatisation is the process of
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