View showing coal being discharged from bottom of coal wagons into conveyor system at Ironbridge Power Station on 4 June 1998. The safety locks are released (and later locked) automatically as the wagons move through the unloader but the staff open the hopper doors using the white wooden poles at the appropriate moment as the train moves slowly through (the class 58 has a special slow speed setting that controls the train up to 2.8 mph). Copyright Pat & David Othen (othen@ns.sympatico.ca) othen@ns.sympatico.ca