Mark and I tackled a critical home project that consumed most of our day. Last year I discovered, after receiving a $1000 water bill, that our lawn irrigation system had a significant leak in the supply line. To effect the repair we had to slice a 6-inch wide slab from our asphalt driveway and replace the pipe below it. Working together and with some rather clever methods and homemade tools we were able to extract the 250-pound slab intact.