Three derricks have been erected along Pine Street to facilitate removal and replacement of the derricks at the center portion of the site from the original temporary timber frame to the new piles. The southernmost derrick on Nassau Street has already been placed on a taller platform. At the Wall Street frontage the temporary roadway has been moved from the western edge of the site to the eastern edge. By relocating the roadway the excavation contractor can begin removal of fill at the center portion of the site. Timber bracing has been placed at the basement level of the demolished structures; this bracing will help support the perimeter walls while the center of the site is excavated.