brother is farmer,,and pays dear price for propain to dry corn..told him of a burner,for corn stalk bales..nope..aint got time he said...yeah,right….There are some sawmills that burn bundles of slabs in home made boilers. A guy I used to know used to burn the cardboard bales of recycled cardboard to heat a chicken barn. 2 or 3 fit in his at a time and only needed when the chicks were young for a week or two.