This 15-second clip shows a lot going on at the same time. Blair Gregson, Sr in red t-shirt is trimming a capstone with hammer and chisel to make it fit. To the left, helper Jason, shovels sand from ATV-towed trailer and throws it at the screen to sift out any unwanted dross. Meanwhile, to the right in blue shirt, Blair, Jr is setting rocks in mortar in advance of the capstone-laying process. Movie taken 6/18/08.