P.S. - never did find the picture for this - i know it's here somewhere.
Several years ago we had to take out two 101 year old oak trees in our front yard. They were falling apart and only about 3 inches of live material thick but 14 or 15 feet in circumference. They had to go. It took one month and a crew of skilled tree removers - but the yard payed the price. When they left there was not a blade of grass left... a clean slate was handed to me.