How cranes and diggers were made and used in the 1940's -- Film 1929

Machine shop for welding and producing parts. Producing NCK cranes and diggers for the building construction trade. Plant. Pickford truck drives plant to the site. Quarry machines at work. Crane unloading sand (?) from ship. Pre World War Two housing estate. Pipe laying, Dredging a river, viaduct under construction. Moving timber. Dockside construction. 60 tonne crane on a barge.