Maintenance Of Track Including Miscellaneous Permanent Way Work And Other Related Works In Connection With Maintenance Of New Doubling Track Between Mahuariya (Mxy: Km 66.29) To Dudhi Nagar (Dxn: Km78.31) (12.02 Km.) ,Obra (Obra Km137.89) To Papra Kund (Ppkd: Km 144.24 ) (6.35 Km.) Section Including Yards (Total Length 18.37 Km) In Connection With Ramna Singrauli Doubling Rail Line Project Under Dhanbad Division Of Ecr.