Another sample:

But what was usual was, when the magnet got delivered, I had the crane put it down next to the cyclotron which was going to give us the Pi mesons coming in, and I had designed some air bearings for the magnet. We put some thin steel plates on the floor. And so that night after my magnet had been delivered, I went in and connected the tygon tube to the air bearings, and opened the valve, and now I could push the magnet around with one hand. Of course, the first thing I discovered was that the floor was not level. And if the floor is off by a milli-radian, that is, twentieth of a degree, that 80 ton magnet — 80,000 kilograms — is pushing you with a horizontal force of 80 kilograms. So you levitate it; it's very nice, it sits there, it's obviously not stationary any more; and then you notice that it is springing on you, accelerating like an enormous boat, and you try to push it back and it doesn't stop, and then you realize that all you need to do is turn off the valve and it stops. So then we did that.