posted 2 years ago
Our local Del Norte Fire Safe Council is getting a grant that will fund a curtain burner on a trailer, and a small staff to support collecting feedstock and distributing the char. It will be a step up in scale and quality control from our Wild Rivers Permaculture Guild’s Ring of Fire kiln, but I do
wonder if the much higher cost (75-100x) will pay off.
The main constraints seem to be the labor of collecting the feedstock and inoculating and distributing the char (especially mixing in and spreading with compost). I estimated for the ROF kiln burn at my place it took about 60 hrs of labor to collect and 20 person hrs to burn 10yds+ of fuels (w added benefit of wildfire mitigation), which produced 2yds+ of char. The burn itself only took 4hrs, w 6 people each doing 3ish hours of labor helping feed the kiln (rests and sausage cooking occurred as it burned). It took me about 6hrs to hand mix my 1.5yd share (gave the rest to people who helped) into about 6yds of compost.
This last part could be aided by machinery, but most of the collection could only be done by hand, or with machines doing a lot more damage to the forest as they work. I suppose the best mechanized strategy might be to cut swaths of fire breaks on contour, then use those as access paths and maintain the clearings with livestock.
This is all just my opinion based on a flawed memory