The NY Times highlights how, in spite of being many years away from opening, the National September 11 Memorial and Museum does have one exhibit in place: The 62 foot by 64 foot foundation wall, aka the slurry wall, from the original World Trade Center. However, the big challenge now is securing it. The Port Authority and the memorial's builders are reinforcing it with "steel caisson cores," a "new concrete liner," and a "pilaster wall,"......