41. The immidiate roof is called
42. In massive rocks, when the bedding planes on them are more than
43. The anchorage support of resin capsule is
44. Generally the load on the prop plotted in
45. Diamond formed in
46. The strength of diseased timber is
47. Compressive strength of coal
48. Triaxial tests usually performed by
49. Time taken for errecting one wooden bar is
50. CMRS has experienced with a system of roof botting known as
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