Slowmo industry in action, excavator digs for Mississippi River clay sand - aerial orbit wide shot

slowmo industry action excavator dig mississippi river clay sand aerial orbit wide shot crane industrial mississippi river lock and dam no 4 alma wisconsin dam lock reservoir aerial view buffalo county upper mississippi river minnesota kellogg lock and dam no 4 channel infrastructure overlook structure usa pool 4 waterway landmark concrete water station canal building architecture day machine lake pier float barge drone