Reply #51: To counter the misinformation by posters in this thread, some details about the 400 acre memorial:

[CreekDog]

"The proposed boundaries of the National Memorial extend from Lambertsville Road to U.S. Highway 30. It will be about 2,200 acres (890 ha), of which about 1,000 acres (400 ha) will be privately held, but protected through partnership agreements. The memorial itself would be a 400-acre (160 ha) bowl-shaped area, with 1,800 acres (730 ha) surrounding as a buffer.<4> In December 2002, landowner Tim Lambert donated 6 acres (2.4 ha) at the crash site, and entered discussions with the Conservation Fund regarding 160 acres (65 ha) additional.<5> Using some funds donated from receipts for the film United 93, the Families of Flight 93 organization purchased 3 acres (1.2 ha) in the summer of 2006. The organization is also seeking $10 million in federal funding to use for acquiring land.<4> In November 2006, the Conservation Fund acquired 100 acres (40 ha) as buffer land which are to be managed by the Pennsylvania Game Commission.<6> PBS Coals Inc. sold 900 acres (360 ha) to the families' organization in March 2008.<7>"

source Wikipedia: http://en.wikipedia.org/wiki/Flight_93_National_Memorial