wrwtexan, are you saying that it had to be burned before ten days? or just that they were able to do it?
I've never seen fresh trees successfully burned, but it doesn't take that much to do it. I'm sure they piled them carefully and probably found some dead stuff to get the fire going with. Once you get a fire burning hot the wet wood burns fine, it's just so tough to get a big pile to start. Packing it tightly together, and concentrating the heat in a trench helps a lot. A "squirrel cage" furnace blower hooked to piece of ductwork that's crimped down to a nozzle at the end works wonders to make a small hot fire into a big hot fire, if you have power available.
I've never seen fresh trees successfully burned, but it doesn't take that much to do it. I'm sure they piled them carefully and probably found some dead stuff to get the fire going with. Once you get a fire burning hot the wet wood burns fine, it's just so tough to get a big pile to start. Packing it tightly together, and concentrating the heat in a trench helps a lot. A "squirrel cage" furnace blower hooked to piece of ductwork that's crimped down to a nozzle at the end works wonders to make a small hot fire into a big hot fire, if you have power available.