61. Bull Dozer is often referred as . . . . . . . .
62. Beach sand found in eastern coast is known as . . . . . . . .
63. Maximum permissable gradient for haul road in open cast mine is
64. Payload capacity of scraper.
65. Restoration, reclamation and rehabitation of land shall be completed.
66. Bucket wheel excarators employed in these rock conditions.
67. The height of bench for 4.6 m3 sovel is kept at
68. Filling up of the void in open cast mines known as . . . . . . . .
69. Which type of shovel avoid fuelling problem.
70. Which is the substitute for explosive.
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