I think the Rostowrack engine was formally displayed at the Holman Museum until it closed. It is now at the King Edward Mine and there are plans to re-erect the engine in the former winding engine house there.
All they need no doubt is a hefty input of cash, and unless we can turn beam engine erection into a sport before 2012 I guess a lottery grant is out of the question! 😉
There is at least one Cornish engine stored in a dismantled state at the Science Museum, Wroughton Nr Swindon this is the 1863 Harvey’s of Hayle engine from the Carpalla clay works.
This engine would fit nicely into the pumping engine house at Levant, in my daydreams if I won the lottery that is where it would end up!
::)