SBC- JTJ section: TRR(S) in loop lines of exg.52kg 72/90 UTS rails on 52 kg PSC sleepers of 1540 Nos./Km with 52kg/90 UTS rails on 52 kg PSC sleepers of 1540 nos. /km for a length of 4.191 km in loop lines of (BNC & BYPL yards) in Sr. DEN/East sect