>>1245235>Coal is one of the most polluting fuels there is.>Never going to be as efficient as diesel, although later steam engines managed to improve their efficiency.>Takes 3 hours to start up. Diesels, you just press a button.>Got to rake out the ashes at the end of the day as well. Generally just more labour intensive.Yes, I love steam as much as anyone, but if you're trying to run a business, diesel or electric makes much more sense.