But my question is comparing same size bit and Anthracite, I.E. nut, is if I used in the past 3 tons of Anthracite, would I expect to us approximately the same amount of bit?

So really even if you go by BTU's per lb. there is just too many variables to make a good guess...franco b wrote:You would use more bit because that smoke not burned is good fuel.
Both fuels if air starved produce CO, so that is probably a draw.
If you burn it in the Florence it depends on how clean it burns.