In London, work on the ditch of one of the most odious structures was completed. This is a 5-story underground building for the Cancer Center, which the University College London Hospitals NHS Foundation Trust intends to open. With the help of architects from Ireland and modern excavators McGee, foundation pit depth of 28.5 meters was dug, and its area is 87 by 67 meters. That's enough to place 640 London buses.
To extract the soil, it took 300 workers, who worked 16 months. About 1,850 tons of metal structures are used to maintain the soil along the perimeter of the pit. Also, a system of continuous monitoring and analysis of the soil is used, since the lowest level of the ditch is located approximately at the same depth as the metro. Interestingly, the extracted soil was used to build a golf club in Oxfordshire.
Now a few words about proton-radiation therapy, which will be used in the future center for the treatment of cancer. Such deep structure is necessary for working with a proton rays - a new cancer treatment method that allows the most accurate impact on infected cells without damaging other human organs. It is planned that 750 patients can be treated at the same time in the center.