Modern equipment for road construction

About

Modern machinery helps in making materials for the construction of concrete motorways and in the construction of the roads themselves. SHOTS: - Large dredging mills remove gravel from the floodplains of the Meuse River in Limburg; - the dredged stones are sorted by size in a mechanical sieve; the small ones are dumped directly into the hold of an inland barge; the large ones are first cracked into fine gravel in a floating gravel crushing plant before being dumped in the hold; - in a high concrete mixing installation sand, cement and gravel are mixed to form concrete; lorries transport the mortar permanently; - a large moving distribution machine spreads the mortar regularly over the ground; - a car drives over the newly constructed motorway.

Human-made No record of this work says a model made it. What this means.