Formwork now covers 50% of pit

Around the central seismic column and pad, it's easy to see the exact location of the future ITER Tokamak.

Around each one of the 493 seismic pads, the plywood is cut to fit exactly. Some 14,000 tons of concrete will be poured over this plywood "floor." After the basemat dries, the propping and formwork materials will be removed through an opening on one side of the pit.