Replacement and repairing of damaged intermediate frame and deck plates, installation of idler frame with rollers, fabrication and erection of same at Unit no. 301 Near culvert area to middle portion belt conveyor of ROM section at Madhuban coal Wash Replacement and repairing of damaged intermediate frame and deck plates, installation of idler frame with rollers, fabrication and erection of same at Unit no. 301 Near culvert area to middle portion belt conveyor of ROM section at Madhuban coal Wash