I have fought this stove of mine all winter, been burning or trying to burn Centralia pea coal. Which I know from reading on here is just a broker. Well they broker crap. I finally ran out of it, and just thought i was still in learning curve. I picked up 600 pounds of blackshak yesterday, added some when I got hom last night and I could not believe the difference. This stuff lit right up and boy did it crank the heat out. The other stuff never made heat like this. And Not nearly the ash this am on shakedown. I am just amazed. I was ready to pull this stove out and try something else.