As flat as a billiard table

This photo, taken late February 2011, shows the final excavation phase of Tokamak Complex Seismic Isolation Pit. This last step involves "milling" the rock in order to achieve a flat surface on which to commence the construction of the base slab for the Tokamak, Tritium and Diagnostics buildings. When finished, the horizontal rock surface will be as smooth as a billiard table. 

The construction of the reinforced concrete slab is expected to start in April 2011.