Yes, in America they don’t know theory well, but practice always outstrips

 Imagine the gulf between Russia and America. In Russia, they dream of creating at least a small combined flotation-gravity unit in order to go down in history. They even gave drawings to China, just to make it., just to make it. And in Chile they have a gigantic industrial combined flotation-gravity installation and do not even understand how lucky they are, what a miracle they have.
And the Russians are still messing around in the laboratory, creating what Chile already has, only much better.
It was exactly the same 100 years ago with the agglomeration plant.
Yes, in America they don’t know theory well, but practice always outstrips.

Ph.D. Natalia Petrovskaya