ThinkGood,
At Dulles, no, it was a farm for a LONG time, then it became an airport.

The Pentagon was something a bit different. It was built on an old airport, junkyard, landfill, whatever human refuse was buried there. One Steamfitter took home an INTACT model T. It was rusted, all cloth gone, but all was there.

Handmade crowbars from the original construction - they must have had someone making them on site, we had pictures of crews with them, OLD pottery, OLD china, we dug up lots of interesting stuff there.

For some reason, they were sorta funny about taking pics of the place [Linked Image]