Paul...,
Not sure where your data came from , but for sure some of it is dated.
The Teufelsburg site was in the British Sector of Berlin. It was technically an RAF
Operation. Yes, there were Americans working there.
It is my understanding shortly after the wall came down the German government requested that facility to be closed and it was. In fact, an episode of the TV series Covert Affairs was filmed at the Teufelsburg site. It appeared to be in ruins an was referred to in the program as " a relic of Cold War paranoia"
O
