Talk at Gregoire’s House Vienna (Austria)

Talk at Gregoire’s house. Vienna (Austria), 6 September 1984.
…and in the center of it, you see, so it doesn’t touch the sand at all – sand has nothing to do, only the water. After the minimum level we find out, what is the minimum level, it goes on – and we put it there.
Now what happens, that the water is collected, it is sucked in through here, see. We don’t suck in any sand also. […]