Gunny do you have 200 cords or 2,000 cords of Walnut or more? Walnut burns just fine. It is what many call a medium hardwood. It produces a fair amount of ash. It appears to me similar to Pine and many kinds of Fir as far as ash production. It burns clean and consistent. It does not snap and pop like some kinds of Fir so putting it into a fire place is OK. Most of my customers want wood that they can put in the fireplace with out any screen over the opening knowing it will not spit embers out in to the room. Generally the limbs are used for firewood and the trunks are used for lumber. The trunks have to removed with a mechanical device of some kind. Most people use a tractor to push the tree over cut the limbs off of the trunk and then load the trunks onto a truck or trailer for processing. The trunks must be preserved from drying out usually by wax. My device for removing the trunks was a self contained winch that could pull the trees into a pile for processing. If your trunks are of high quality then a good process is to sell the milled wood to gun manufacturer. Unmilled trunks brought in as much as $10,000 for 1 trunk. Typical lumber for cabinets and such is valuable, but nothing compares to gun stocks. A large negative was often the wood had to be delivered to wherever the plant was that needed the lumber. For me in California going across states lines was expensive. If you have to haul your wood 1500 miles often is a major factor in deciding what to do with the wood. Thanks