Have just seen on Real-time trains 6J24 travelling between Norwich and Ely this morning described as diesel loco trailing 3,500 tonnes. I'm aware some freight trains are very heavy but this seems a enormous weight and am not surprised it was timed to travel at only 45 mph. Also, went via Bury St Edmunds-due to weight restrictions on the direct route via Thetford? Anyone any idea what was being hauled?