Today, the Port Authority and National September 11 Memorial & Museum announced the near completion of steel framing for the design’s memorial pools. 99.8 percent of the project’s 8,151 tons of steel has been installed to date. For what it’s worth, when completed the Memorial will boast more steel than was used in the construction of the Eiffel Tower. In the coming months, workers will begin the installation of the granite panels that line the walls of the pools, which will be the largest manmade waterfalls in the country when finished, pumping 52,000 gallons of recycled water per minute. A mockup of the waterfalls was built in Brooklyn in January. Follow this link to see an AP video of memorial designer Michael Arad discussing the motivations behind the project.