Hello; That Larson was built specifically for Hitachi for one job site, but the build or lift was scrapped but they paid Larson I believe. Awesome video! Biggest cranes that are more than 800 feet high and can lift loads in excess of 5.000 tons tallest cranes for the construction of petrochemical plants, installation of wind turbines or power plants largest cranes and powerful cranes ever built around the world industrial cranes such as crawler cranes, ring cranes or tower cranes manufactured by main companies. All of the boom's on all the different cranes are shaped square box. But a better shape for strength is a it will ad strength for the twisting movement of wind when it's a heavy load that is higher up where the wind it faster?Newer designs are on the way.