On March 3-4, the largest concrete placement of the entire FRIB Project took place. Over the course of 35 hours, 3,563 cubic yards of concrete was placed for the last linear accelerator tunnel foundation slab, which has concrete 14 feet thick in areas. It required 360 truckloads of concrete. In preparation, 265 tons of reinforcing steel was placed in the weeks leading up to the concrete placement. The amount of concrete placed was enough to cover a football field in concrete 2 feet thick.