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...Job role jumbo drill operator min q difficulty sr nos code pc questions option a b c d answer level easy no medium hard parts n kc generally how many drilling lever none of these in head cylinder screw connector what daily oil change filter diesel working monthly maintenance checklist details hour maintaenance consist detail flat tapered key with one rounded edge that drift bolt all are design to fit into spindle chuck s slot mechanically anchored without grout true false widely used mining general based on the type anchor roof point full length both can be devided two mager group ka types service break parking maximum trailing cable is meter m measures control lacing back filling and pillar failure diametre cm wooden prop heat resulting from engine fuel spark compressing air injected combustion ignited by supplied for chamber which follwing bolting practice do not recoverable non require any quick bamboo side stiching setting cement capsule hole instrument measure pitot tube aneroid b...