Ran into this 1910 picture of a monument to dead Firemen in Philly on Girard Ave. Don't know if it is still there.
Which makes me think that is time we were putting a fitting monument on all the remains of the dead of 911 still out there in the hallowed ground of Fresh Kills garbage dump in Staten Island.
I like the design of the above obelisk. Say fifty feet high and in white stone or concrete and visible from the nearby highway.
They can spend billions over in Manhattan for show (the tourists). How about tossing a bone to the forgotten borough regarding the forgotten dead - the unknowns?