It was only a good sob story that got me admitted on the day the museum was closed for clean up, following a two-day Xmas Market, thanks to really friendly staff.
So the 12,000hp steam engine wasn't in operation, but that didn't matter. That such a behemoth can be reversed within 2 seconds (important for rolling thick steel plate), is amazing.
Engine reversals can be seen at 5:42 and 6:09 in this 7-1/2 minute video.
The Yorkshire diesel-electric loco is at the rear of the museum in the car park - from where this view of a weir on the River Don was taken.
