"https://www.youtube.com/watch?v=lvb1Y5tKn4MI'm not sure how well it does the job. The centrifugal force just pushes everything outward. The chemical industry had a hard time producing homogenous mixtures until this was invented "
"Ten years older the Vizcay Bridge near Bilbao, Spain still does its job reliably. Build by Eiffel Disciple Alberto Palacio. Definitely worth a visit when you are in Basque Country.https://en.wikipedia.org/wiki/Vizcaya_Bridge"