I grew up with coal, adults going down to the coal scuttle and shoveling it into the furnace. In my folks first small house, the furnace was free-standing over a wooden floor, and I discovered the floor burning in a game of hide and seek, but someone else had to report the fire alarm because I thought maybe that was how it worked ... at about age 4. The house is still there, with a second story added, and presumably a new furnace, but our family moved out about a year later. I haven't lived in a coal burning residence since. I think it would be hard to get delivery in my N.C. city. My first house had oil heat, but we went to natural gas and had to petition the utility to get a gas line to our house which was right in the middle of town. The line installers thought we must have been related to the governor. We weren't.