I thought about it but I never seen "free coal" ads and at work we get tree damage sometimes with storms and often thought about using it instead of just tossing it. We used to just throw it in the dumpsters; then I got introduced to wood heat and then my view on tree damage went from frustration to excitement. My one friend heated with it for five years until last year when he switched to pellet. He would get two tons and noticed a big difference in the coal. Some of the loads burned great, others terrible. He tried two different suppliers with the same result. Being not too far from the coal region I'm surprised they are not more that I know of. I like the heat but I really did fall in love with the flames with wood, and the smell. As with most things, there are pros and cons which differ from place to place, person to person.