Hi, I burning a small Godin stove using coal from the Paonia,CO region. Its small pieces (1 " or less) and it goes out at night and leaves lots of what must be coke in the firebox. While it is burning it does make heat, but one has to fiddle with it a lot by adding small amounts of fuel, as adding too much will kill the fire. Is the coke just a characteristic of this coal?
I would add more coal (deeper) but I am using the lower smoke exit from the firebox because the upper outlet will not fit into the fireplace chimney (too high to clear) and I am reluctant to cover the smoke outlet with coal. Maybe I need to change this. I have an oval Godin that will fit.
The stove burns wood well.
There is a source of oiled coal in NM that I could use. Previously I used coal from the Dexter MT mine, but that has been a while and I don't remeber how it burnt.