From atop a small hill of contaminated soil (which will soon find another place in a changing world), we view a completed puzzle piece. A center section has been fitted with embedded threaded rods, which will apparently by used for anchor support posts. I haven't managed to locate an engineering drawing, but expect precision will accompany each planned effort... quite impressive. Note : these images were taken from outside a primary construction area; rules of safety were appropriately observed. It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring. Carl Sagan