The demolition of concrete block support columns of a jetty at Falmouth Docks, Cornwall. The docks are beinbg redeveloped and a workman is using a pneumatic drill to break up concrete blocks of an unwanted supporting column. There are four of these columns projecting above the water. The quay in the background is lined with sheet steel angled piling. A BP tanker is alongside a pier and next to it is the Admiralty Floating Dock No. 5 (1912) laid up. The floating dock was towed out from Falmouth 30 April 1966.