Replacement, repairing of worn out intermediate frame and deck plats, installation and erection of idler frame with rollers, fabrication and erection of same at 902-2 tail end side belt conveyor of PS-9 section at Madhuban Coal Washery under Block-II Replacement, repairing of worn out intermediate frame and deck plats, installation and erection of idler frame with rollers, fabrication and erection of same at 902-2 tail end side belt conveyor of PS-9 section at Madhuban Coal Washery under Block-II