I'm glad to know what it is finally. Thanks, Bottle Rocket. Thanks, Red. But it looks like we have discovered what it is. Today from the same building I dug one tooled slick about an inch and a half below the surface, 4 pipes, part of a porcelain doll, many shards, and the base to a Gravitating Stopper-- the Gravitating Stopper was on the surface. I also brought out a number of bricks.