All depends what you pay per ton. Also takes a bit different handling than a wood-fire.
I suspect most deaths from coal burning are from CO poisoning, whereas deaths related to wood-heat are from wood-fires. That's not based on any stats - just my own experience.
One pound of wood yields 7800 BTUs of heat. One pound of soft coal around 8800 BTUs. One pound of hard coal around 12,700 BTUs.
A full cord of dry soft maple weighs 3000 lbs. and yields around 19,000,000 BTUs of heat.
A full cord of dry red oak weighs 3700 lbs. and yields around 24,000,000 BTUs of heat.
A full cord of dry hickory weighs 4300 lbs. and yields around 28,000,000 BTUs of heat.
In my area, a full cord of firewood right now costs around $220.
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Today's Featured Article - Good As New - by Bill Goodwin. In the summer of 1995, my father, Russ Goodwin, and I acquired the 1945 Farmall B that my grandfather used as an overseer on a farm in Waynesboro, Georgia. After my grandfather’s death in 1955, J.P. Rollins, son of the landowner, used the tractor. In the winter 1985, while in his possession the engine block cracked and was unrepairable. He had told my father
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