When I was a kid in the 50's in this hillbilly town my grandma's house was a large Victorian style home built in 1890. There was a coal burning fireplace in each room, including the bedrooms. When the iron fireman brand electrically controlled coal furnace was installed in the basement my grandparents stopped burning coal in the fireplaces and used only wood in them and only for special days like Christmas and Thanksgiving - more for effect than for making usable heat. They now had central heat controlled by a thermostat. There was an entire room in the basement converted into a coal bin, and each morning somebody had to go to the basement to remove the sometimes red hot clinkers out of the cast iron firebox and shovel coal into a hopper that automatically fed coal as needed into the furnace. There was coal dust around and as small children visiting grandma's house we'd have fun trying to walk in the coal in the bin - we'd sink into the stuff almost up to our knees and get coal dust all over ourselves. The coal was delivered by dump truck from the coal company. It's a wonder the big old house never did burn down with all the fire and coal in the basement. Coal dust thrown on a fire will provide for some neat pyrotechnics and even singed hair. A few times a malfunction occurred that resulted in panic when black sooty smoke started pouring out of the registers - just like it happened in the movie "A Christmas Story". The less affluent folks in town burned the coal in their heaters that came in big chunks, and in winter you could smell the coal smoke in the air, it was very noticeable. After a snow that stayed on the ground for days on end (yes - we had a lot more snow in TN in the 50's) - the soot settling down out of the air from all the coal burning going on was visible in places on the snow surface. It was probably not healthy air to be breathing back then. The clinker piles in the woods behind the house are still there.