Our One Chicago team undertook a massive concrete pour for the mat slab that will support Tower A of the future 2.1 million sf mixed-use development. Our crews began staging four strategically placed concrete pumps and other equipment around 4:30am and had only 10-12 hours to place 3,500 cubic yards of concrete. The operation was orchestrated by 40-45 concrete trucks who moved onto the site in phases, sweeper and vacuum trucks who were actively deployed to the perimeter to mitigate any dust and dirt, and flaggers who were posted on each corner of the site for pedestrian safety. A big thank you to all of the subcontractors who helped to make this major milestone so successful!