I remember when I was a kid, before we got a chipper, Dad used to burn all the brush. Two or three times a year he would set the burn pile on fire. We had a 2 acre flat lot next to the yard and he would get piles literally as big as a house. He'd put the old truck tires around the edge and put a puddle of gas in each one and light them on fire. The black smoke would billow up and the tires would get going, only took a few more minutes to get the brush going. Man, I'm glad we don't do that anymore, Joe.