Absolutely awesome writing. THIS is what I wanted, thank you :-)
But, as an elderly nerd myself, I have a question...
In the UK, there are many preserved railway lines that run steam trains but many have stopped running because the 'special' coal they need is expensive and only imported in small quantities. I could Google the reasons and trawl through endless crap to get the answer but why bother when Hive has you!
TIA ;-)