Definitely not appropriate now. Burning coal we know to be destructive to the atmosphere. Even early on in the industrial revolution smog was noted in English cities as coal was fundamental to machinery for transport, and manufacture, and it filled the air, polluting the atmosphere. I’m glad for other forms of fuel to supplant coal. It would be good to have a solar train! But, nonetheless, I love old steam trains (some would say addicted to them), they evoke strong feelings in me. My childhood comes to life again as I remember family outings, trips to far off cities, going trainspotting with my dad, going to a soccer match with my dad and his friends. The sound of the trains, which ran close by our home, the smell of the coal fire, the whistle at the level crossing, are marvelous memories. It was like they were alive, hence the term iron horse, or mechanical beast, equating life to them. Steam lives on through my inner child as it comes to the fore, with train trips, scale modelling, and museum visits, treasured memories are evoked and very welcome. For me, a steam train is a key to my past, an experience of joy, and a treasure-chest of rich memories, they are evocative of special times.