The interesting thing about the coal furnace is it burns everything and burns it completely.
The only thing it can't burn is anything that's small enough to fall through and flow through the ash grates at the bottom.
I have only identified 3 things that do that:
Wood pellets.
Rice coal. And probably rice too, but I don't know know why anyone would burn rice.
Corn, I guess burning corn is a thing in places where you are neck deep in corn right about the time it gets cold out.
Some wood chips can fall through the grates but they flow very poorly, it's not even enough to where I would worry about pulling the ash pan and dumping the wood chips back on top of the woodchip pile.
Wood pellets can be shoveled in on top of woodchips.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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