A week after the previous photo (B17139) the derrick has been reset and the third tier of columns has been erected. Temporary protective staging is being constructed along Nassau and Wall Streets to protect passersby and to provide a temporary work platform. Steel to be placed has been piled on the planked second floor deck and over the Wall Street sidewalk vault. The built-up sections at street level (Wall Street elevation) will be secured to the shear tabs--steel plates secured to the sides of the columns--that are visible on most columns.